The Applegate, Katherine creator text Children's stories. Science fiction. New York Scholastic 1998 First Scholastic printing, December 1998 monographic 155 pages : illustrations ; 20 cm The Yeerks are not the only invaders of Earth. Meet the new enemy: the Helmacrons. Cassie finds their miniature spaceship and donates it to a toy drive. Big mistake. The Helmacrons are tiny, but they're far from helpless. They have the technology to shrink other creatures to their size. And until they get their spaceship back, they're taking hostages. The Animorphs must find a way to send these pests back into space--before it's too late. O 640 Lexile O Raz-Plus K.A. Applegate "An Apple paperback." Science fiction Metamorphosis Juvenile fiction PZ7.A6483 813.54 0590762575 (pbk.) ZAB 20240116103627.0 2821 eng