Colin receives an anonymous package that leaves him both confused and horrified. Inside is something so baffling that he’s tempted to simply ignore it—if only he could stop wondering who sent it and why it came in a cake box. Driven by a sudden wave of existential anxiety, Colin embarks on a frantic investigation into his own life, determined to uncover the sender's identity. Despite his sister Lisa and her husband Brian’s attempts to keep him from spiraling, Colin’s suspicions grow wild, and he becomes obsessed with exposing the culprit.

This irreverent comedy dives deep into the murky waters of past mistakes and modern revenge, asking what you should do when someone disrupts your world—laugh it off or hunt them down for answers? The Gift embraces the messiness of vengeance, with Colin ready to go to any lengths to uncover the truth.