Musician Yoo Tan jumps off the stage and declares his unending love for his girlfriend, Da-in. Seven years later, he seems to have a change of heart.
From the spam phone call to the meeting with an entertainment company representative, everything seems to be a repeat of yesterday for Tan.
After countless days of spending money, partying and gambling, Tan finally starts to wonder how his other band members and Da-in are doing.
Determined to change how the day ends, Tan tries to eliminate everything that can go wrong and decides to take Da-in away on an unplanned trip.
Seven years ago on the day that Tan and Da-in met for the first time, Tan was busking with his band and Da-in became his first audience member.
Da-in makes a deal with the death messenger. On their first anniversary, Tan takes Da-in to an expensive restaurant and prepares a special event.
Tan decides that taking his life first is the only solution to end his agony. The death messenger explains to him how he can stop the time slips.