Yi-jung lives with her mother Su-kyung, but they do not get along well with each other. While out grocery shopping one day, they fight as usual and Su-kyung’s car ends up hitting Yi-jung in the parking lot. Yi-jung does not believe Su-kyung’s claim that the car suddenly accelerated on its own and thinks her mother hit her on purpose. Now, Yi-jung wants an apology from Su-kyung for everything that happened in her life.