Guo Ge

In 1945, Harbin has come under the rule of Japan's puppet state known as Manchukuo. Communist agent Song Zhuo Wen successfully infiltrates Harbin Secret Service where Guan Xue holds a post as the chief of special police.

When their mother dies and their father withdraws, the Qiao siblings must rely on each other to survive. Led by their eldest brother, they grow up facing life’s struggles together, forming an unbreakable family bond through perseverance and love.

The stubborn, adorable Lin Xi approaches the crafty top student Ji Jun Xing on purpose. Throughout their "opportunistic" friendship, feelings bloom between the two as they are always there for each other. Not only do they make friends, but they also make their own dreams and goals come true in the end.

In October 1936, after the three main Red Army forces joined forces, over 20,000 troops crossing the Yellow River were reorganized into the Red Army West Route Army, tasked with opening an international route in the Hexi Corridor. Fighting against harsh environment and far superior enemy forces, they captured key strongholds in January 1937 but fell into heavy siege after Gaotai was lost. Most officers and soldiers sacrificed heroically, and the remaining finally returned to the revolutionary base after untold hardships. Their sacrifice and contribution are forever remembered.