Olivia Barron, her best friend Markie Cameron, Markie's boyfriend Lucas Moreno, along with Penelope Amari and her boyfriend Tyson Curran, and Brad Chang go on a trip to Rosarito, Mexico. In Mexico, Olivia runs into fellow student Ronnie who proceeds to harass her until a man intervenes on her behalf. The man introduces himself as Carter and eventually convinces her and her friends to join him for drinks at the ruins of a mansion. There, Carter initiates a game of Truth or Dare with Olivia and her friends, plus Ronnie, who followed the group. Eventually, the game ends when Carter reveals that he deceived Olivia as a means of tricking her and her friends to the mansion to offer them in his place in the supernatural game of Truth or Dare. As Carter leaves, he explains to Olivia that the game will follow them and they must not refuse it.