For estranged friends Ashley, Natalie, and Lauren, it's time to heal the old wounds between them. Where better to repair those severed ties than on a getaway to the beautiful paradise of Tulum, Mexico? But even after they're reunited, no one is being completely honest about the past or the secrets they're hiding. When Ashley disappears on their girls' night out, Natalie and Lauren have to try to piece together their hazy memories to figure out what could have happened to her, while also reconciling their feelings of guilt over their last moments together.