Ataru Moroboshi is randomly selected to play a game of tag with an invader, Lum. Ataru tries his hardest to get back with Shinobu but Lum causes hell just to ensure 'Darling' is hers for the keeping.
Ataru can run, but he can't hide - not from Lum, and not from the gorgeous shrine maiden Sakura's eagle eyes. She can tell at a glance that he's in dire need of exorcism.
Two's company. Three's a crowd. And when a FOURTH party enters the Lum/Ataru/Shinobu situation? Things get pretty scary in Ataru's already complex love life.
Lum ain't the only alien princess in town. The new arrival has her sights set on a certain boy - but her vassals are keeping a scandalous secret from their ruler.
Are aliens invading again? Nope - it's just Ataru, Meno and Lum's mothers invading Parents' Day. But a language barrier may turn this meeting of the moms into pure mania.
What's this? A handkerchief? It smells divine, so it MUST belong to a total hottie. Definitely not a nightmare creature or anything like that. Ataru's nose cannot be fooled.
Lum's cousin Ten thinks Lum should look for greener romantic pastures. And if Lum can't see reason, Ten will burn her relationship with Ataru to the ground.
The girls in class aren't the only snacks Ataru has his eye on. When teachers crack down on off-campus snacking, a no-holds-barred snack battle begins.
There is nothing suspicious about the lipstick Lum wants to put on Ataru. Nope, nothing suspicious at all. Later, Ataru's class takes the dreaded Yaminabe food challenge.
The finalists have different motives. Lum wants Ataru's attention, Ran wants to get in Lum's way, Shinobu and Sakura want the money, and Ryunosuke has something to prove.