A tale where 10 people get the chance to go back in time by one year, yet all of a sudden strange circumstances begin to arise when their destinies are transformed and turned at the same time. Ji Hyung Joo is a detective in the violent crimes department. He utilized to be part of the traffic police but was promoted when he jailed a desired offender. It's been 7 years since the modification, as well as he's a talented person who always understands how to unwind. Though he is happy in the beginning to have the chance to go back in time by one year and "reset" his life, he starts to look for the truth when a collection of mystical occasions fall upon on the group of people he goes back in time with. Based upon the Japanese novel, "Repeat".