The Merryman family consists of five mice, Mama, Papa and three little mice. On a lovely afternoon they all set off for a picnic where little Cheddar, the baby, antagonizes a lion by hurling an acorn at him. For a moment it looks like the end of little Cheddar, but the lion, taken with the warmth of the mouse family, lets him go. Later on when Mr. Lion is trapped in a net the Merrymans repay his clemency by chewing him free. The author tells us that the intent of this frolic is to promote world brotherhood. Whether or not it succeeds in this claim, James Daugherty's drawings of the minstrelly-looking mouse family and his frisky text do much to entertain.