Visser Four has found the Time Matrix, the machine Elfangor had hidden, and he plans to use it to become Visser One.

Finding an ally in the android Erek King, the Animorphs come to appreciate his nonviolent nature and seek to collect the vital information he has before they lose their fight against the evil Yeerks.

Marco is faced with a difficult decision when his mother threatens to seize control over Visser One.

"Kafka wants to clean up kaiju, but not literally! Will a sudden metamorphosis stand in the way of his dream? With the highest kaiju-emergence rates in the world, Japan is no stranger to attack by deadly monsters. Enter the Japan Defense Force, a military organization tasked with the neutralization of kaiju. Kafka Hibino, a kaiju-corpse cleanup man, has always dreamed of joining the force. But when he gets another shot at achieving his childhood dream,...

"Sometimes weird things happen to people. Ask Jake. He could tell you about the night he and his friends saw a strange light in the sky that seemed to be heading right for them. That was the night five normal kids learned that humanity is under silent attack...Now Jake, Rachel, Cassie, Tobias, and Marco can transform into some of the most dangerous creatures on Earth ey must use that power to outsmart an evil greater than anything the world has ever...