A contemporary village party secretary who fell exhausted on the front line of poverty alleviation crossed over to become the "timely rain" Songjiang River in Liangshan. Facing the imperial court's recruitment, he knew better than anyone else - that road led not to eternal loyalty, but to an abyss with 108 casualties. With his faith and grassroots experience in his previous life, he refused to be ordered to be ordered to be punished, and paved an unprecedented new path in Juyi Hall: defeating local tyrants, dividing fields, building farmers' associations, and running schools, turning Liangshan from a rough mountain village doing justice for heaven into a base for the poor people all over the world. When Tong Guan and Zhong Shidao's armies press against the enemy again and again, and when the base is tempered by blood and fire, the flag that rises from the depths of the water will eventually change the direction of an era. This is a story about how an ideal took root in the darkest era - serving the people. These five words are an eternal fire in any era.