A married couple (Melissa McCarthy and Chris O'Dowd) lose a child and the wife goes into a recovery place to help her with overwhelming grief, leaving the husband at home alone. To help aid in her recovery, the husband decides to build a beautiful garden for his wife in their backyard, but as he does he is tormented by an aggressive, black starling.
At his wits end with the relentless nature of the bird, he goes to see a veterinarian to find out if there is a humane way to get rid of it. The vet, the husband finds out, used to be a psychiatrist but gave it up to help animals instead. However, the quirky vet begins counseling the husband in a turn that neither of them really expected.
