Moll, Lora, and Belvera, the Elias sisters, are at odds again. Belvera seeks the secret power of their ancestors, tiny triangular power units that transform the sisters' small daggers into powerful swords. She steals the three units from Infant Island but is thwarted by Fairy Mothra, Moll and Lora's pet, and fails to retrieve the proper triangle for her sword (each power unit will only work for a specific sword). Moll and Lora end up with a unit that transforms Moll's sword.