Secrets are meant to be kept secret!Just before he begins fourth grade, Frankie Bennett goes to Sea Sight Elementary School to get ready for the new school year. After picking up his class schedule, he overhears a woman in the school lobby talking to her son about finding a student there named Joey Fallon.The mother knows Joey has a secret she must learn. She tells her son to trick Joey into revealing the secret being protected by Joey and his family.As it happens, Frankie is Joey’s cousin, so he warns Joey about the woman and her son. Joey gets help from Frankie, his older brother Jake, and their two friends, Matt and Baron. Those Five Kids team up to investigate the mysterious kid, wanting to learn why he and his mother must know Joey’s secret.