The story of Teacher Su and Classmate Liang.
A fate that began in late summer ended abruptly in autumn, even though they both thought it was destined.
A relationship was born in the study, but ended miserably in the teaching building, even though they both thought it was an indestructible relationship.
An agreement was made this autumn and promised to be fulfilled in the following autumn, even though they didn't know whether there would be a chance to meet again.
Is this absurd love an episode in life, or an unbreakable love?