Within twenty-four hours after Bedelia, an old maid, has lost her green cat, she is begging Boggs, of the National Detective Agency, to find her lost pet and offering him $1,000 reward as an added inducement. Billy, Boggs' assistant, goes out on the case and finally tracks down a kitten which had received an accidental bath from a can of green paint. Boggs decides he will earn the reward a little easier, and tells his daughter Constance to get him a stray cat, which he intends to paint green, then claim the reward.