Ataru is kidnapped by "kappa" vampires and taken to the bottom of a lake, prompting Lum to fear he's drowned. Confusion reigns supreme when Ataru and Ten run afoul of body-switching earmuffs. A strange, white, and very rapidly growing caterpillar eats everything in its path, then holes up in a cocoon while gang goes to war over it. And Ten gets a big crush on Sakura, then enlists the aid of Kintaro and his bear in caring out his Assault of Love!