After ten years of drinking ice, it is difficult to cool the hot blood; in the north, being crowned king is just for the purpose of returning home. Chen Tianlong, a name that frightened the border countries, was once the youngest "War God of Zhenbei" in northern China. He led the "Tianlong Guard" to sweep through Mobei and protect thousands of miles of rivers and mountains. However, due to a well-planned unjust case of "collaboration with the enemy", he was stigmatized and forced to retire, hiding incognito in the bitter cold of the north.
Three years later, a critical illness notice from his hometown pulled him from the frozen battlefield back to the bustling city. On the hospital bed, his grandfather who loved him in the past was dying, the family business was eaten by his old enemy, his sister was bullied by the villain, and his fiancée turned around and fell into the arms of his enemy after he was "unjustly" punished.
The former God of War returns to his throne and burns the city with rage! Facing the enemy who was approaching step by step, he took off his old cotton-padded clothes, revealing medals and scars all over his body: "If I, Chen Tianlong, can protect the country, I can protect my family! Everything you owe me and the Chen family will be settled today!"
From then on, a bloody storm broke out in the urban arena. The enemies of the past were frightened upon hearing this, the giants in the business world surrendered, and the underground forces were trembling. He took revenge with iron-blooded tactics, protected his relatives and friends with thunderous means, and inadvertently uncovered the layers of darkness surrounding the unjust case in the North, awakened the sleeping "Dragon Guard", and rekindled the glory of the God of War. On the road of revenge and protection, he also encounters new bonds - a mysterious medical successor, a loyal brother from the old department, and a secretly affectionate business queen. Together they compose an urban legend about passion, justice and protection.