Kayla and her father, Jay, are embarking on a journey to a ballet retreat. Their trip takes a turn when they pick up Kayla's best friend, Britney, who is also bound for the same destination. As they stop for a bathroom break in the woods, tragedy strikes when Kayla screams, leading Jay to find her alone on a bridge. In a shocking revelation, Kayla claims to have pushed Britney off the bridge. Panicked, Jay searches the area for any sign of Britney, but his efforts yield nothing, and he fears she has drowned.
In a quest for clarity, Kayla discovers Britney's purse and the two decide to visit Rebecca, Kayla's mother, who is navigating life post-divorce. Jay recounts parts of the distressing event, while Kayla confesses to her mother that she has committed murder. Their day takes another unexpected turn when Sam, Britney's father, arrives to inquire about his daughter's disappearance. When he asks to speak with Kayla, Rebecca deceives him, claiming she is at a doctor's appointment. A suspicious Sam departs but returns later, discovering Rebecca's lie and confronting them about Kayla's actual whereabouts.
Tensions escalate as Jay and Sam engage in a physical altercation, with Sam threatening to alert the authorities. In a bid to protect their family, Rebecca reaches out to her former colleague, Detective Kenji Tagata, sharing her concerns about possible abuse stemming from Sam. During the police investigation, both Rebecca and Kayla detail Sam's erratic temper, suggesting he may have harmed Britney.
After taking Kayla to his apartment, Jay returns home only to have Sam spot her. A frantic chase ensues, where Sam attempts to drag her away, but she manages to escape and hides. Meanwhile, Jay and Rebecca make a covert visit to Sam's residence to dispose of Britney's phone but are caught. In a violent encounter, Sam threatens them, asserting he knows Kayla is responsible for Britney's supposed demise. In a desperate act, Rebecca drives their car into Sam, who later dies on the road, bleeding and begging for assistance.
The shocking conclusion presents an even more unsettling twist: Britney, alive and well, reappears at their home the next morning. She unveils a meticulously crafted plan that was all a ruse to gain time with her boyfriend. Observing Jay and Rebecca cleaning blood from their car with mounting suspicion, Britney demands to see Kayla. Ultimately, Kayla tearfully confesses to her participation in Britney's scheme, explaining that they intended to fabricate a tragedy to rekindle the bond between her parents. As the family embraces, Kayla, in distress, pleads for her parents to remain united, but the sound of approaching police sirens looms ominously.
