Everyone knows Ariana Castillo as the girl who never stops smiling. Kind. Friendly. Trustworthy. But when a series of mysterious disappearances shakes Saint Victoria University, Ariana begins receiving anonymous notes signed only with a white mask. As forgotten memories slowly return, she realizes the truth is far more terrifying than she imagined. Because the person hiding behind the mask... Already knows her. And they're closer than she thinks. In a place where everyone wears a smile, who can you really trust?