Qiao Dai, a classmate who is upright and hates the world, traveled back to his favorite era due to a trip arranged by the school. On the first night he arrived, he met the leader on the same floor - a handsome and enthusiastic young man.
Under the care of the enthusiastic young man Jiang Qingyun, Qiao Dai unexpectedly fell in love with this era even more.
The boy also has a younger sister at home, and her life is not very good, but both of them are strong and progressive.
As they get along day by day, Qiao Dai and Jiang Qingyun exchange their sincerity for their sincerity and gain their own happiness.
Purpose: Sincerity is exchanged for sincerity, and the world will be warmer.
