Chaos parachutes into Currawong when the annual Mud Run hits town. The Peski kids are soon swept up in the festivities. Or in April's case, strapped to a vision-impaired competitor in the race.
Can Joe beat the fierce opposition? Can Fin hit Joe with a giant mud ball? Can April make it through a school day without getting expelled? Who knows? But when the prize money goes missing someone has to figure out what really happened under all that mud!