Talking mouse Isaiah is free from the experiments that left him with blue fur and a big voice, and living a picture-perfect life with his human friend, Hailey. But the evil scientists--and their evil talking cats--are hot on Isaiah's trail. When they mouse-nap his friend Mikayla, it's up to Isaiah and Hailey to rescue her.

Their search takes them on a cross-country adventure, where they face foes and make unexpected friends. If they can find Mikayla, they might even find a way to free Isaiah's siblings and create a happy ending for all of the lab mice.

This endearing and whimsical tail tale from bestselling author James Patterson is a celebration of bravery and determination in all shapes and sizes.