First, an alien kindergarten class under the tutelage of a pretty alien teacher comes to Earth for a field trip. Rascally alien Ten and Ataru volunteer to be their tour guides - but not out of their love for small children!

In the first of two poolside stories, Lum's spoiled cousin Ten drops an alien candy into Tomobiki High School's pool, stimulating an unprecedented growth of horrifying one-celled beasties. In the second, at filthy-rich Mendo's hotel pool, the gang discovers a "pool monster" lurking - and serving high tea - in the chlorinated depths.

Then, when Lum's papa takes her future into his own hands and invites a smorgasbord of alien bachelors with bizarre physiognomies to meet his unsuspecting daughter, Ataru crashes the party. He may not want Lum for himself, but that doesn't mean he wants anyone else to have her!

Story and art by Rumiko Takahashi.