For decades, Chief of Cardiothoracic Surgery Lee Jin-hyuk dedicated his life solely to his patients.

But one fateful night, filled with regret over missing his mother’s final moments, he falls asleep… only to wake up in February 1998, back at the start of his internship?!

In his second life, he wants nothing more than to devote his time to his family.

But no matter how hard he tries… living quietly is simply not an option!