(Book 4) The Adventures of Arrow − Mission: Ellie's first step

Arrow is a dog that is always ready for an adventure and always ready to help
out his little human sister, Ellie. When he walks in on her trying to take her first
steps, he’s eager to do whatever he can to make sure she succeeds.
There’s nothing that can stop Ellie and Arrow when they work together.
The Adventures of Arrow: Ellie’s First Step is a fun-filled, heartwarming adventure
that is sure to inspire a love of teamwork and kindness in any child.