A childhood burned by fire, a road of revenge paved with blood and faith.
The "Sunshine House" orphanage, a haven where they depended on each other, turned into a flaming hell that swallowed everything overnight. A premeditated attack took away the dean who they regarded as their father and their youngest brother Ye Xiao. The four surviving children - the resolute Lin Jin, the calm Su Han, the loyal Shi Meng and the lonely Lu Yiming - made a blood oath in the ruins: no matter what the price, they will fight tooth for tooth and blood for blood.
To do this, they chose the most difficult path. The four of them joined the military and were tempered in the fires of completely different branches of the military. The "lone wolf" of the special forces, the "ice phoenix" of the intelligence field, the "rhinoceros" of the heavily armed barrier, and the "ghost" of the shadow walk... They suppressed their grief and sharpened themselves into the four sharpest knives of the motherland.
However, when they finally locked onto their enemy "Black Sun", they found themselves involved in a larger whirlpool of conspiracy. Internal betrayal, the shadow of the arms group, the powerful black hands... The road to revenge is full of fog and thorns. When personal blood feuds collide with the country's mission, they must answer one ultimate question:
Is what we pursue the pleasure of killing our enemies with our hands, or the responsibility of guarding the light behind us?
