The Bowery Boys--Slip, Sach, Bobby, Whitey & Chuck--start their own exterminating service, and get a job which takes them to a spooky old abandoned mansion in the middle of the night. Meeting up with pal Gabe and his new French bride, the boys are tormented by mad scientists who try to convince them the place is haunted and then kidnap Sach in order to place his brain inside a gorilla.

Gulliver washes ashore on Lilliput and attempts to prevent war between that tiny kingdom and its equally-miniscule rival, Blefiscu, as well as smooth the way for the romance between the Princess and Prince of the opposing lands. In this he is alternately aided and hampered by the Lilliputian town crier and general fussbudget, Gabby. A life-threatening situation develops when the bumbling trio of Blefiscu spies, Sneak, Snoop, and Snitch, manage to steal Gulliver's pistol.