For years, the beloved clown Leo Mousini was the star attraction at the circus. Every evening he performed astonishing acrobatic feats, daring balancing acts, and complicated juggling tricks. Audiences loved him - especially the children. But as the years passed, the tricks grew harder to do. Leo Mousini grew too old to be a clown. So, sadly, Leo leaves the circus. But two stowaways leave with him, tiny mice who dream of becoming clowns themselves, and they prove to be the key to a wonderful new life for Leo Mousini.
