Episode list

Kang Baek-ho is forced to accept that his own cowardice prevented him from confessing to his first love, Yi-seul, when he watches her marry another man. The Conductor gives him a chance for a do-over.

Back in high school, Baek-ho tries to make it up to Yi-seul by getting her movie tickets for a date.

Baek Ho changes his pitch during a crucial game, in the hopes of avoiding an injury that ruined his baseball career. A new coach for the high school team arrives.

Having an insight on the future, Baek-ho tries to help his friends realize their true passions while in high school, before it's too late.

Baek-ho is envious of Joo Tae-nam's ability to proclaim his love for Yoo Chae-ri. His actions begin to drastically affect his future.

Yi-seul's grandfather helps Baek-ho regain his courage and strength to stand on the pitcher's mound.

Baek-ho decides to let go of Yi-seul so that she can fulfill her own dreams of becoming a sports agent.

Baek-ho goes back to his military days in the hopes of seeing Yi-seul when she visits him at the base, but things don't work out as planned.

With Chan-wook's help, Baek-ho wonders whether he truly deserves Yi-seul over Jin-won.

Baek-ho discovers that despite successfully getting Yi-seul as his girlfriend in the past, he made an unforgivable mistake that led to their breakup.

With all the attempts at winning Yi-seul's heart over, what Baek-ho doesn't expect is for them to grow apart...and for her to possibly have a change of heart.

Baek-ho's mother unwittingly causes friction between him and Yi-seul. Jin-won's dreams of forming a Third League begin to come true.

The Conductor tries to give Baek-ho a chance to completely forget about Yi-seul, but his love for her is too strong. The friends all head to the beach for their New Year's Eve ritual.

Baek-ho's constant time traveling drastically changes the future when he reaches one where Yi-seul no longer exists.

The Conductor's past is revealed, and Baek-ho acts to reverse Yi-seul's death.

Though Baek-ho wakes up from his coma, he completely forgets Yi-seul, his best friend and love.