Pearl and Wagner, a rabbit and a mouse who are best friends, learn about secrets during a trip to an ice cream factory and an amusement park birthday party.
April Fools' Day is not a happy one for Wagner the mouse because his best friend, Pearl the rabbit, and other children and adults at school keep tricking him.
Even though summer vacation starts in five days, Pearl and Wagner, a rabbit and a mouse who are best friends, worry about next year's teacher, mean Ms. Bean.