The girls meet a new magical girl, Usagi!  But when the new girl turns out to be a monster, they'll have to become "a magical girl who's anxious to fight the enemy that's right in front of them, and a magical girl who's started to get worried about things at the worst possible time, and a perverted magical girl who's getting excited to realize that he's actually a boy!"  Can they break out of the spell and transform by giving a plausible explanation for what they'd do with 150 crabs?
cross between a hermit crab and a snow crab
تبدو كتقاطعٍ بين السرطان الناسك والثلجي
eine Mischung aus Einsiedlerkrebsen
und Eismeerkrabben,
qui sont un mélange 
entre une écrevisse
che ho visto in TV con la mamma,
che sono un incrocio
de caranguejo-hermitão
 e caranguejo-das-neves,