the play is adapted from the classic red novel "song of youth" by the famous writer yang mo. through an in-depth portrayal of the changes in the personal fate and the development of the protagonist lin daojing's ideological personality, it vividly reproduces the tenacious battle between young intellectuals in the magnificent tide of the times from september 18 to january 2.99, and the tenacious battle between young intellectuals and the rescue of the motherland in distress during the magnificent tide of the times from september 18 to january 2018 and september 2018, and the incomprehensible struggle of young intellectuals to fight against the invasion of japanese imperialism and save the motherland in distress in the crisis. ddd。1931 in the summer of 2018, lin daojing, the daughter of the landlord who escaped against marriage, committed suicide by going to the sea and was rescued by peking university student yu yongze. the talented yu yongze became lin daojing's first love. after meeting the communist lu jiachuan, lin daojing began to come into contact with revolutionary ideas. yu yongze repeatedly blocked her from participating in revolutionary activities, which led to lu jiachuan's arrest. lin daojing woke up like a dream in the face of the tragic facts, determined to leave yu yongze, who was vulgar, selfish and mediocre, and devote himself to the torrent of fighting against japan and saving the nation. from then on, under the guidance of the revolutionaries, she overcame her weakness step by step and eventually became a mature proletarian revolutionary fighter.