Beautiful space alien princess Lum invades Earth on her UFO, and unlucky Ataru Moroboshi's world gets turned upside down! What unimaginable shenanigans will Lum bring to Ataru's life? One thing's for sure--nearly every moment is electrifying with her around!

Mendo's secret past is suddenly revealed! Driven by empathy--or perhaps friendship, or maybe just curiosity--Ataru and the gang journey to Mendo's childhood to address the roots of his incurable claustrophobia. Later, the principal is inspired to launch a Miss Tomobiki High pageant in which the ladies of the school vie for dominance in beauty, intellect and combat skills! Who has the grace to destroy their competition and win the pageant crown?