An unhappy couple decides to get a divorce on their wedding anniversary. They both wish they could go back in time and marry someone else

Jin Joo and Ban Do try to explain to their college friends that they have been sent back in time. Their friends do not believe them

Waking up to discover that they are still in the past, Ban Do tries to set up his family financially and seduce Min Seo Young. Jin Joo reminds Ban Do about their son

A heated conversation that the couple thought was private, was heard all over campus, and is all anyone can talk about

Jin Joo's charming senior tries to spend more and more time with her, while Ban Do grows even closer to his first love

Jin Joo and Ban Do keep butting heads while dating their respective first loves. Can they see what they saw in each other before?