After being mugged, Scratch Murphy the flea asks Ace Lacewing, Bug Detective, for help in finding the culprit who stole money from his Six Legs Amusement Park.
Springtime in Motham City means baseball, but the player who could lead the Stinkbugs to a rare winning season loses confidence when his special bat is stolen, and Ace Lacewing is hired to find it before the team misses the playoffs.