Wish Upon (2017)

Clare Shannon, a seventeen-year-old high school outcast, is haunted by the memory of her mother's suicide that she witnessed as a young child.

Her father, Jonathan, a hoarder and dumpster diver, finds a Chinese music box and gives it to Clare. She deciphers one of the inscriptions on the box as "Seven Wishes", and absentmindedly wishes for Darcie, her school bully, to "rot", at which point Darcie develops necrotizing fasciitis. That same day, Clare's dog Max dies. Clare deduces the box grants wishes.

Clare makes a second wish that a popular boy named Paul would fall madly in love with her and he does (so much he starts to stalk her). That same night, her wealthy great-uncle dies. Hearing this, Clare wishes to be in his will, which leaves everything to her. Consequently, their neighbor Mrs. Deluca dies.

Clare enlists the help of classmate Ryan Hui to translate the symbols on the box. His cousin Gina is able to decipher that each of the seven wishes comes with consequences and the box belonged to a Chinese woman named Lu Mei. During a 1910 outbreak of bubonic plague in China, Mei's family was forcibly quarantined in a railroad car where all but Mei died of starvation. Mei prayed for revenge and offered up her family's only valuable heirloom, the music box, as a sacrifice. A demonic Yaoguai spirit answered her prayer, cursing the box. After using the box to get her revenge, Mei committed suicide.

Clare makes a fourth wish that her father will stop being so embarrassing; he stops dumpster diving and starts playing the saxophone again. Gina learns the meaning of the final phrase on the box: "When the music ends, the blood price is paid." Before she can warn Ryan, she is impaled on a statue in her loft and dies. After Ryan finds Gina's body, he angrily confronts Clare.

Despite now knowing about the "blood price", Clare is in denial and makes a fifth wish to be the most popular girl in school. She is soon unhappy with the loss of her relationship with her best friends, Meredith and June, and her constant nightmares. She breaks up with Paul after discovering he has been stalking her and sneaking into her house at night. Meredith dies when the elevator she is in plummets 30 floors.

Ryan reveals that after the seventh wish, the Yaoguai will claim the soul of the box's owner and all previous owners died tragically. The box cannot be destroyed so Clare hides it in an air vent. Paul breaks into her house and threatens her, unable to accept the end of their relationship. He attempts suicide and is taken away in an ambulance. June steals the box, knowing Clare will not get rid of it. Per the rules of the box, Clare loses everything she'd wished for and returns to her previous existence, miserable. Addicted to the power, she wrestles the box back from June, frustrating Ryan, who blames her for the string of deaths. Her sixth wish is that her mother never committed suicide and her reality changes, with her mother now alive and two younger sisters who did not previously exist.

While rummaging through her mother's paintings, Clare finds a painting of the music box, discovering that her mother was a previous owner, which led to her suicide. She hysterically runs to protect her father but is too late; her father is decapitated by a running chainsaw. Frantic, Clare makes her seventh wish – to go back to the morning her father found the box.

That morning, Clare finds the box moments before her father, preventing the tragic sequence of events. At school, she asks Ryan to bury the box for her and kisses him. However, she is immediately killed when she's hit by Darcie's car, the Yaoguai having claimed her soul just like her mother.

In a mid-credits scene, Ryan prepares to bury the music box, but becomes intrigued by the inscription about the seven wishes.