Laura (Alycia Debnam-Carey) is one of the most popular students at school and enjoys her life. She is active in social networks and above all likes to share things about her with her almost 800 friends on Facebook. One day, Laura receives a request for friendship from Marina (Liesl Ahlers), a girl she barely knows, but still accepts. This sets in motion a terrible curse. Laura begins to obsess with the profile of the unknown girl and this begins to lead him more and more into solitude. When all his closest friends begin to die under brutal circumstances, he only has a few days to solve the mystery of the girl and save his friends.