On that day, I was going to confess to you.

Choi Ji-young, an unidentified woman who accidentally encountered her on Ulleungdo Island.
Sunwoo Hyun keeps bothering Ji-young.
Two people who are attracted to each other even in a short period of time.
Then one day, Ji-young suddenly disappears.
Without a trace.

"It's been a while, Hyun. Aren't you going to say hello?"

Ji-young, who could not be found no matter how much she visited, became the "Choi Ji-an" and appeared in four years.
That's also for Hyun to protect.

"With this time, there is no Choi Ji-young I knew. So, just delete it too."