Xia Yimu is the perfect student in everyone's eyes - top grades, well-behaved, and never resists. However, behind this "perfection" lies the pathological control of her mother, Chen Lihua: a schedule that is accurate to the minute, grades that do not allow any mistakes, and a life in which even friends must be reviewed. He is like a butterfly imprisoned in a glass cover, beautiful but suffocating.
Jiang Yu is a "problem student" in school, fighting, skipping classes, and full of hostility to the world. As an orphan, he was ignored by his adoptive parents and used rebellion to protect his fragile heart.
When two completely different teenagers met at an abandoned observatory, Xia Yimu saw the halo of Jupiter for the first time, and Jiang Yu discovered for the first time that there was someone less free than him.
They agreed to escape together - Xia Yimu taught Jiang Yu how to solve problems, and Jiang Yu taught Xia Yimu how to resist. However, when Chen Lihua discovered this "dangerous relationship", she destroyed it at all costs: spreading rumors, expelling Jiang Yu, and completely imprisoning Xia Yimu.
Finally, on the eve of the college entrance examination, Xia Yimu stood on the roof of the teaching building and chose to fall for freedom. The diary he left for Jiang Yu was filled with his true self that had been erased by his mother. And Jiang Yu, standing on the edge of the same rooftop, faced a more cruel problem:
**If the stars are destined to fall, what's the point of looking up? **
Intention: to test the waters