Everyday, nine-year-old Otis Dooda confronts a series of zany changes when his father's new job prompts the family's move to a New York City apartment, where Otis is cursed by a guy in a potted plant in their apartment building lobby and has to team up with a new friend and a gassy miniature horse to break the curse.

Ten-year-old Liam and his two younger sisters, precocious third-grader Dakota and second-grader Izzy, who has Down syndrome, face the possibility of losing their beloved dog, Cupcake, who keeps urinating on their apartment's carpet.

"Twelve-year-old Minerva Keen forms a detective club to uncover who is poisoning residents of her storied Chicago apartment building, knowing that any one of her neighbors could be the poisoner--or the next victim"

Eleven-year-old Simon is ready to make the Tangerine Pines his forever home, but when a robbery occurs in the apartment building, he and his new friend set out to solve the case and keep his family from moving again.