When Hannah’s sister-in-law Melissa forces her to pay a $1,470 grocery bill, Hannah has no choice but to comply. Melissa, known for her manipulative ways, doesn’t repay Hannah, considering it a birthday gift. Hannah decides to teach her a lesson.

Melissa, married to Hannah’s brother Brandon for ten years, often exploits others. When Melissa “forgot” her wallet during a grocery trip, she insisted, “Can you cover this? I’ll pay you back.”

Angry and feeling used, Hannah starts to retaliate. She tips off a car dealership about Melissa’s poor credit, causing delays in her car purchase. Then, she warns a bakery about Melissa’s payment history, leading them to demand upfront payment for her birthday cake.

Hannah also changes Brandon’s Amazon account password, locking Melissa out of her favorite online shopping site. On Melissa’s birthday, Hannah shares her story with family and friends, leading to a sparsely attended party. Hannah gifts her a card with a $14.70 gift card, saying, “Here’s a little something toward your next shopping trip.”

Brandon eventually confronts Melissa about her behavior, realizing her manipulative nature.