🎯 Quick Overview
Trailer
- Director: Brian Duffield
- Genre: Comedy, Drama, Horror, Romance, Sci-Fi
- Release year: 2020
- Runtime (length): 1h 41min
- IMDb rating: 6.5/10 (18K votes)
- Rotten Tomatoes: 78%
😅 Plot Summary – Badly Explained
High schoolers start exploding, so a girl and a guy decide to date before one of them turns into a human piñata.
🍿 Spontaneous: Detailed Plot Synopsis
The Outbreak Begins
During a seemingly ordinary senior calculus class at Covington High, student Katelyn Ogden suddenly explodes, leaving behind a horrifying scene. This bizarre event throws the school and its students into chaos and fear. The police investigate, but find no logical explanation for the spontaneous combustion.

Mara and Dylan’s Connection
Amidst the growing panic, Mara, a sharp-witted and somewhat cynical student, suggests the explosions could happen again. Her comment catches the attention of Dylan, a quiet admirer who confesses his long-held crush on her via text. They begin to form a bond, navigating the uncertainty and fear together.

Escalating Chaos and Government Intervention
As more students inexplicably explode at school events, a full-blown crisis erupts. The incidents attract the attention of federal agencies, with Agent Rosetti leading the investigation. Quarantine and medical experiments ensue in an attempt to find a cure, but the students grow increasingly anxious and disillusioned.

Hedonistic Escape
Mara and Dylan, facing the potential for sudden death, choose to embrace a hedonistic lifestyle, indulging in risky behavior and seizing the moment. They deepen their relationship, finding solace in each other’s company amidst the chaos and mounting death toll.

⚠️ Spoilers and Ending Explained
🎬 Cast & Characters
- Mara (Katherine Langford): A cynical and outspoken high school senior who navigates a world where her classmates spontaneously explode while learning to live in the moment.
- Dylan (Charlie Plummer): A thoughtful and romantic student who confesses his feelings to Mara amidst the chaos and embraces life despite the looming threat of explosion.
- Tess (Hayley Law): Mara’s loyal best friend who provides support and companionship as they face the bizarre and terrifying events.
- Agent Rosetti (Yvonne Orji): The FBI agent tasked with investigating the spontaneous combustions, who seeks Mara’s help in understanding the phenomenon.
- Angela (Piper Perabo): Mara’s mother, who grapples with supporting her daughter through an unimaginable and terrifying experience.
- Charlie (Rob Huebel): Mara’s father, who tries to provide a sense of normalcy and support as the community falls apart.
💬 Memorable Quotes
- Mara: “I’m gonna live the life I want right now. I’m not gonna waste time waiting for a day that may never come for me.” – Mara says this after realizing the students deaths are random, that it could happen to anyone, and that life should be lived in the moment.
- Mara: “You realize that all the stuff you thought mattered doesn’t, and the stuff you thought didn’t, does.” – Mara reflects on how the unpredictable explosions change her perspective on what’s important in life.
- Dylan: “What if today was the best day ever, and we just didn’t realize it?” – Dylan expresses his optimistic outlook, emphasizing the importance of appreciating each day despite the circumstances.
💰Box Office
- Budget: N/A
- Domestic Gross: N/A
- Worldwide Gross: N/A
💥 Spontaneous Reviews
Personal Review
Okay, so I went into this expecting a goofy horror-comedy, and I got…that, but also something way deeper? Like, the explosions are obviously insane, but I found myself genuinely caring about Mara and Dylan. The scenes where they’re just trying to live their lives despite everything were so real. I actually cried when Dylan… you know. Seriously, it’s worth a watch if you’re in the mood for something weird and surprisingly heartfelt. I wasn’t expecting the depth and the emotional impact this film had on me.
- Who would enjoy:
- “Fans of dark comedies”
- “Viewers interested in coming-of-age stories with a twist”
- “Those who appreciate metaphorical narratives”
- “Viewers who enjoy movies with strong female leads”
- Content warnings ⚠:
- “Graphic depictions of sudden and bloody deaths”
- “Strong language”
- “Drug and alcohol use”
- “Teen sexuality”
- “Brief political references”
Professional Reviews
- IndieWire: “Spontaneous finds a darkly comedic sweet spot, blending teen angst with literal explosions. Langford and Plummer deliver strong performances, navigating the absurd premise with genuine emotion. It’s not perfect, but it’s a surprisingly poignant take on living in the moment.
- The Hollywood Reporter: “While the premise is intriguing, *Spontaneous* struggles to find its footing. The dark humor occasionally lands, but the overall experience feels uneven. Katherine Langford is compelling as always, but the film’s message gets lost in the chaos.
- Variety: “Spontaneous takes a wild swing, and the result is…mixed. It’s a film that’s trying to say a lot of things but doesn’t quite manage to say them all effectively. There’s great stuff in here, but the tone is all over the place, and the movie’s many moving parts don’t fully come together.
Audience Reactions
The dark humor combined with genuine emotion made this film surprisingly touching and thought-provoking.: Viewers loved the unique blend of genres and the unexpectedly poignant message about living in the moment.
Katherine Langford’s performance was a standout, capturing the character’s cynicism and vulnerability perfectly.: Many viewers praised the acting, especially Katherine Langford’s portrayal of Mara.
Overall Consensus: Spontaneous is a polarizing film with a unique premise that resonates with some viewers while leaving others cold. Its blend of dark humor, teen romance, and horror elements makes for an unpredictable, if uneven, experience.
Awards
🛠️ Behind the Scenes
- “The film is based on the young adult novel of the same name by Aaron Starmer.”
- “The movie was filmed in Vancouver, British Columbia, Canada.”
- “Several reviewers noted the film as a metaphor for school shootings, survivor guilt and ineffective governmental response.”
🖥️ How to Watch Spontaneous?
Spontaneous is available to rent or buy on various digital platforms, including Apple TV, Amazon Prime Video, Google Play, and Vudu. Check your preferred streaming service for current availability and pricing. It is also available on demand through cable providers.

🎥 Similar Movies
If you enjoyed Spontaneous, you might like these similar films:
- The Fault in Our Stars (2014): Deals with the themes of young love and mortality in a relatable way. Both movies center around characters making the most of life despite difficult circumstances.
- Warm Bodies (2013): A romantic comedy set in a post-apocalyptic world. Both films blend dark humor with sincere emotional moments.
- Heathers (1988): Dark comedy with a high school setting that deals with morbid themes and social commentary.
- Final Destination (2000): Deals with the themes of random death and trying to change fate. Features a similarly dark and absurd sense of humor.
🛒 Spontaneous Related Products
- Spontaneous (Movie Soundtrack) [Digital Download]: Enjoy the full Spontaneous movie soundtrack from the comfort of your home. Let this music transport you back into the hilarious and dark world of Spontaneous.
- Spontaneous – The Novel by Aaron Starmer [Paperback]: Dive deeper into the world of Spontaneous with the original novel that inspired the film. Experience the story from a new perspective and uncover even more of the dark humor.
- Spontaneous – ‘Covington High’ T-Shirt [Merch]: Show your love for the film with this Spontaneous-themed T-shirt. Featuring the Covington High logo, this shirt is a subtle nod to the movie’s explosive events.
- The Fault in Our Stars [Blu-ray]: If you liked the balance between romance and tragic life events in Spontaneous, than The Fault in Our Stars has what you are looking for. A love story of two teenagers who both have cancer.
🎧 Soundtrack
Spontaneous features a captivating soundtrack that enhances the movie’s atmosphere and emotional impact. Here are some notable tracks:
You can find the complete soundtrack on Amazon Music and Apple Music.
🤨 FAQ
The spontaneous explosions are often interpreted as a metaphor for the unpredictable nature of life and the sudden loss and tragedies that can occur, particularly those experienced by young people, such as school shootings or the COVID-19 pandemic.
Spontaneous was filmed in Vancouver, British Columbia, Canada. This is subtly revealed in the movie by a scene where Dylan plays 5-pin bowling, a Canadian variation.
Yes, Spontaneous is based on the young adult novel of the same name by Aaron Starmer. The movie adapts the core storyline and themes of the book, but there are some differences.
🔥 Bonus Content
Is Spontaneous Human Combustion Real? 😳
Ever wondered if people just randomly exploding is a real thing? This video dives into the bizarre topic of spontaneous human combustion, which is actually the premise of the movie. I think it’s cool they made a movie out of this!
Teenagers Are Exploding! – SPONTANEOUS: First 5 Minutes From The Movie (2020)
Want a taste of the movie without committing to the whole thing? This clip shows the first five minutes, and it really sets the stage. I love the dark humor!
Spontaneous (2020) – The First Explosion Scene (1/10) | Movieclips
Curious about how this whole exploding thing gets started? This clip shows the very first explosion and let me tell you, it is WILD. It sets a very unique tone for the movie and the rest of the explosions that follow.
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