Obsession

Baron "Bear" Bailey harbors romantic feelings for his friend Nikki Freeman. They work at a music store with friends, Ian and Sarah. Bear returns home one night to find his cat, Sandy, dead after consuming oxycodone. He later visits a crystal shop to buy Nikki a replacement crystal necklace but instead buys her "One Wish Willow", a novelty toy that claims to grant someone one wish when broken. After a group hangout that night, Nikki asks Bear if he likes her but is unable to admit his feelings. Frustrated, he breaks the One Wish Willow and wishes that Nikki loved him more than anyone in the world. Nikki immediately reappears, and asks to stay with Bear, saying her estranged father is dying of cancer. In bed, Nikki kisses Bear but abruptly screams and pulls back.

The next morning, Nikki makes a memorial with Sandy's remains, but later explains her erratic behavior was the result of MDMA. After confessing their mutual feelings, they begin happily dating. During a date, Ian calls Bear and reveals that Nikki had told Sarah that she saw Bear as her "little brother" shortly before they began dating, and that she lied about her father's cancer, making Bear realize the wish was real. He then questions Nikki about her father, but she reacts with sudden defensiveness and anger. That night, Bear awakens to Nikki watching him sleep, and she cries hysterically, accusing him of not loving her.

The next day, Bear sees that Nikki duct taped the door shut in an attempt to keep him home, and later discovers the sandwich she prepared for him was made using Sandy's remains. Bear calls One Wish Willow's customer support to alter his wish, and they say the wish will only expire when he dies. They then put a screaming Nikki on the line, causing Bear to hang up in panic. He returns home and discovers that Nikki stood in place all day, waiting for him, and is covered in bodily fluids.

Nikki accompanies Bear to a party against Ian's wishes. During a Jenga drinking game, Nikki recites part of a book she is working on, a morbid and incestuous retelling of "Hansel and Gretel". Bear draws a block, daring him to kiss the person to his left, who is Sarah. Nikki ousts Sarah from her seat and kisses Bear instead, before suddenly screaming and bashing herself with a broken bottle. Bear drives Nikki to the hospital, but brings her back home after she refuses treatment.

Later, Sarah texts Bear to meet at the park. As Bear attempts to leave, a lucid Nikki speaks, claiming her obsessive personality is asleep, and begs Bear to kill her. He refuses, offended that she would rather die than be with him. At the park, Sarah reveals that Ian and Nikki had been casually hooking up for two years and expresses concern that Nikki is using him to get back at Ian. After Sarah hints at her own attraction to Bear, Nikki suddenly smashes the car window and repeatedly slams Sarah's head into a brick, killing her. After moving the body, Nikki tells Bear to go home while she disposes of it.

Bear buys the remaining One Wish Willows from the shop to reverse his wish but is unable to break one. He explains everything to Ian and begs him to undo his wish. Ian sarcastically wishes for a billion dollars instead, causing cash to rain from the ceiling. Bear returns home with the last One Wish Willow to get Nikki to reverse his wish and discovers Sarah's mutilated corpse. Nikki, dressed like Sarah, then threatens Bear and herself at gunpoint. Ian arrives and is immediately shot dead by Nikki.

Bear locks himself in the bathroom and prepares to shoot himself but is unable to go through with it. He instead consumes the remaining oxycodone but changes his mind and tries to induce vomiting just as Nikki breaks the last One Wish Willow. Under her wish's influence, Bear exits the bathroom and kisses Nikki before dying from the overdose. Heartbroken, Nikki prepares to shoot herself, but Bear's death causes her to regain control of herself before she does so. Horrified by the carnage surrounding her, Nikki wails hysterically.