Peter, a 33-year-old man, drives through the rain, his phone call with his wife, Lora, escalating into an argument about their relationship troubles. Suddenly, he witnesses a car slide off the road and crash. Rushing to help, he discovers there was no other car involved.
Shortly after, he receives a call from Sara, his long-dead ex-girlfriend, and we are transported back to the day Peter first met both Sara and Lora at a photoshoot. Despite intending to ask Lora out, miscommunication intervenes, and Peter finds himself drawn to Sara after saving her from her manipulative manager, Simon, and her possessive photographer boyfriend, Terry.
In the present, it is revealed that Sara has been dead for years, and Peter's guilt over her death has consumed him, fracturing his marriage to Lora. However, Sara contacts Peter, revealing that she orchestrated her own disappearance due to her shattered influencer dreams. Peter awakens, believing his encounter with Sara and the crash were mere hallucinations, yet he continues to see and interact with Sara. Flashbacks unveil Sara's descent into a dark world of drugs and alcohol, ultimately leading to her demise.
Peter experiences multiple iterations of the car crash, eventually realizing he is the one who crashed and is severely injured. A supernatural battle ensues between Sara, seeking retribution against Peter, and Lora, fighting to salvage their fractured marriage. Should Lora triumph, Peter will survive; if Sara prevails, they can reunite in an eternal, enigmatic love.