Eleven-year-old Jack thought he had outgrown his imaginary friend, George until his dad also disappears from his life. His mom, in the throes of a manic episode, impulsively takes off as well and ditches Jack with his aunt, uncle, and cousins. That's when Jack decides that he needs his ex-imaginary friend back. Only George can help him figure out where people go when others stop believing in them and how Jack can put his family back together.