“After a week in a coma caused by a car accident, Grace Miller's boyfriend, Leonard Stone, suddenly regained his memory. He remembered the girl he longed for but could never have. So, the first thing Leonard did upon waking was to break up with Grace. "Anything that happened during my memory loss wasn't really my choice. From today, let's go our separate ways. Our relationship doesn't hold anymore." Grace didn't try to hold him back. Coincidentally, the new drug research in the lab had just succeeded, and Grace volunteered to participate in the trial. "Once you take this pill, these memories will be permanently erased. Grace, are you sure about your decision?"”