Ten years ago, a fire in the music classroom of Minghu Middle School destroyed the lives of three teenagers. Chen Muyu, the son of the dean, was accused of arson, and the taciturn Zhou Ting took the initiative to plead guilty on his behalf and was imprisoned. Ten years later, Chen Muyu, who had become a designer, reunited with music therapist Lin Qing. In the process of investigating the truth, the two gradually uncovered the corruption case and revenge plan hidden behind the fire.
Zhou Ting planted clues in prison and hid the real ledger in the piano resonance box. Chen Muyu found the iron box she left behind under the flood control bricks, and discovered that what her father had burned back then was just a copy. At the same time, Lin Qing used the melody of "Sunny Day" to heal autistic children in the rehabilitation center, and this unfinished piano music is the key to connecting all the secrets.
When the eternal day chrysanthemum blooms again, the fate of the three people faces the final judgment. Zhou Ting chose to protect the truth with a withered posture, while Chen Muyu and Lin Qing rebuild their lives amidst the scars. The music scores that were scorched by the fire, the bandages stained with flower juice, and the dates engraved on the flood control bricks eventually pieced together a story about sin and redemption - just like the eternal sunflower, even if the roots are rotten, it will bloom with the brightest color until the last moment.
Concept: Dialectics of crime and punishment, post-traumatic reconstruction