Watch When Pigs Fly (2016) Official Trailer

It's about what it sounds like.

Uncle Al tells his niece Esme the story of how he once found a magical tree that could bring his drawings and sketches to life. The tree’s keeper, Grey, along with those living sketches, provided Al comfort in his tumultuous household. Esme’s curiosity picks up where Young Al’s left off, and she discovers the beauty behind his imagination