Jake and Marco decide to sneak into a concert by morphing dogs. As dogs they realize that Marco's old friend Erek has no smell. Eventually the Animorphs figure out that Erek is an android, one of many known as the Chee. The Chee were created hundreds of thousands of years ago by a peaceful and highly advance race of dog-like aliens called the Pemalites. The Pemalites created dogs. Phil and Francesca are fans of dogs.