Bea, Thomas, and the rabbits have created a makeshift family, but despite his best efforts, Peter can't seem to shake his mischievous reputation. Adventuring out of the garden, Peter finds himself on the mean streets of the city where his mischief is appreciated, but when his family risks everything to come looking for him, Peter must figure out what kind of bunny he wants to be.

In a remote medieval outpost of Ireland, young Brendan embarks on a new life of adventure when a celebrated master illuminator arrives from foreign lands carrying a book brimming with secret wisdom and powers. To help complete the magical book, Brendan has to overcome his deepest fears on a dangerous quest that takes him into the enchanted forest where mythical creatures hide.