"Professor Qu, do you know the secret behind your fiancée's hypocritical mask?"
Sunshine girl Song Younan and cool academic tyrant Qu Weizhou are childhood sweethearts. On the eve of their engagement, an anonymous text message breaks the peace of the night.
Song Younan suddenly broke up with Qu Weizhou and then disappeared mysteriously.
When Qu Weizhou was packing his things, he found ten unsent letters written by Song Younan to his young self in a box.
From 13 to 23 years old, one letter per year.
Qu Weizhou opened the letter and accidentally traveled back to the era when the heroine wrote the letter.
From the age of 13 to 23, time travel ten times to reveal the hidden youth of the heroine.
Time and time again, he was unable to tell his younger self the truth and could not change the direction of the story.
They will eventually part.
Concept: Love is never the only thing in life