An inspirational tale of a mother's unconditional love for her bipolar son, this limited series follows Zack (the Gorilla) as he fights to regain his sanity after a devastating psychotic break, turning to the only person who didn't give up on him - his mother (The Bird). Once a highly successful public defender for The Legal Aid Society of New York, Zach's sudden illness takes him on a harrowing journey of delusions and antisocial behavior, leading to his eventual arrest and commitment to Bellevue Hospital.