April Fools' Day is long and hard for the third-grade Huit octuplets, but it is nothing compared to the challenges of Tax Day, through which Jackie discovers her special power and gift and learns more about their parents' mysterious disappearance.
The animal inhabitants of Mud Flat play April Fools' Day tricks on each other involving flying saucers, disappearing neighbors, and water-squirting flowers.
The Dixon twins try to discover who put the snake in the school cafeteria flour bin on April Fool's Day, clearing an unjustly suspected classmate in the process.