A mouse was about to jump off the dock and commit suicide, but was rescued by the little kangaroo Hippety Hopper. In exchange for the mouse to be released from the transport box, Hippie agreed to help the mouse tame the tormenting Sylvester cat, making Sylvester believe that the vitamins had enlarged the mouse to Hippie's size when Sylvester fought against the cat; Giant mice;, He lost in the usual awkward way - this time in front of a bulldog that blamed him.