Feeling neglected by her dad at home and causing trouble at school, 12-year-old Adrienne’s only friend is a stray one-eyed cat that lives on the grounds of a mysterious mansion at the end of the neighborhood. But when her usual visit causes the cat to seem more troubled than usual, he disappears into the mansion, drawing Adrienne to chase him down. But what she finds inside isn’t what she expected: not only is this place filled with ghosts, but the mischievous cat is wreaking havoc across the mansion and its ghoulish residents! In order to find her friend and a way back home, Adrienne will have to fix up his messes and enlist the happy haunts for help. Now if only she could find a way out…