Have you ever thought of going back in time to fix mistakes?

Prevent a death?

Cheat on a test?

22-Year-old Iseo Ju, definitely has, but he knows it's impossible to do so.

Or is it?

After a huge accident in which he chose to sacrifice himself, God chose to revive him and give him a wish, in which Iseo chose a holy stopwatch which allows him to transcend time.

Now, he's on a journey to fix his life up but will learn the consequences of breaking the rules of time.