Meet a giant dog with an even bigger challenge! Charles Peterson is determined to help Moose, a massive Great Dane puppy who looks incredibly brave but is actually a huge scaredy-cat. Despite his towering size, Moose is absolutely terrified of everything around him. From sudden loud noises and passing cars to friendly neighborhood dogs and even his very own shadow, the world is a frightening place for this gentle giant. Moose's original family wants him back, but they need him to be much braver first. Charles realizes he has a lot of work cut out for him if he wants to help this timid pup build his confidence. Teaming up with his knowledgeable Aunt Amanda, Charles creates a clever, step-by-step training plan to slowly introduce Moose to scary sounds and fast movements. Will their patient efforts be enough to help Moose conquer his fears and finally return to the family who loves him?