When Giselle’s car breaks down, she plans to drive the Bentley Mulsanne she gave her boyfriend Sander. She receives an abnormal vibration alert from the car, and Sander acts extremely defensive the moment she suggests getting the vehicle washed. His odd reaction sparks Giselle’s deep‑seated suspicion. She visits Sander’s usual car‑wash shop, and the staff’s vague remarks fuel her doubts. Giselle then takes the car to a repair shop and orders technicians to take it apart for inspection. Sander repeatedly calls her, making up excuses to stop her check. Inside the car, Giselle finds provocative lingerie and deleted dash‑cam recordings, solidifying her hunch of betrayal. Following scattered clues, Giselle uncovers horrifying secrets. Sander has secretly slipped birth‑control pills into her meals. To make matters worse, her close best friend Jessica is pregnant with Sander’s baby. Sander teams up with Jessica’s brother Bailey to spin a lie, claiming they merely want to adopt the baby since Giselle cannot get pregnant. Giselle pretends to buy their story. She secretly collects proof of their affair and obtains a DNA test confirming Sander is the child’s biological father. At Sander’s grand proposal banquet, she lays out all the evidence in front of guests and exposes their elaborate deception.