A once cold-blooded and ruthless prodigal son set foot on a remote island alone after his brother passed away.However, before he could emerge from his grief, the island was trapped in bloody siege of a group of deadly mercenaries.When he gradually revealed the truth and found that his brother's death was inseparable from these desperate people, the anger buried deep in his heart finally ignited.He no longer escaped his past and embarked on a path of revenge without hesitation - cold and decisive, just to repay his brother with a fair debt and blood.