When Freddie Cottonmouth finds a mysterious egg in the river, his new friend Tug makes him promise he will not eat it, and the two go on a series of wild adventures until Freddie learns the price of breaking a promise.
When Freddie Cottonmouth's best friend comes back to life, Freddie is determined they will never be apart again, but first Freddie must rely on the three mysterious gifts Tug left behind to find him.