Over the Garden Wall (2014)

Somewhere, lost in the clouded annals of history, lies a place that few have seen. A mysterious place called The Unknown... Two Brothers, Wirt and Greg find themselves lost in the strange woods, adrift in a time. With the help of a shadowy Woodsmen and a foul-tempered bluebird named Beatrice, they travel through the foggy land in Hope of finding a way home.