Lilly Peters was abanded by her mom and found by hades. Hades took her to the Isle of the Lost. She then became Mal's sister and best friend. When she is invited to Auradon she meets Jane, Doug, Lonnie, and Ben. She is having an AWESOME time at Auradon Prep. And yes there are villains and evil stuff but she is used to that. In her Junior year, Ben proposes to Mal she is overjoyed. They invite her father in law Hades to the wedding but some monsters arrive. Lilly is kidnapped and taken to a place called Camp-Half Blood. She realizes they are people like her and boy was she wrong about her life.