In the turbulent late Republic era, four childhood friends—Lin Fangfang, Sun Xiaoru, Su Mo'er, and Liao Guoxiang—face diverging paths shaped by societal upheaval and personal struggles. Through resilience and determination, they pursue their dreams, discovering that true happiness lies in independence and self-reliance, even amidst the challenges of a changing world.

Tells the story of a Communist Party's early history during the turbulent era, examining the remarkable Chinese revolutionary leaders' zeal and contrition for the ascension of the Chinese people.