A wildfire suddenly engulfs the hillside mansion, leaving teenager Arthur bereaved of both his parents and homeless. To fend off his uncle's power grab and secure the vast family inheritance, he offers half the fortune as leverage to hire Sean — his former stepbrother and an underground bare-knuckle boxing king — as his legal guardian.The pair go from bitter confrontations to a life-and-death bond, only to be trapped in a three-year misunderstanding orchestrated by their adversaries. When they meet again, love and hate pull them in tangled tides; as the full truth comes to light, their old foe resurfaces with a vengeance. Crossing class divides and braving life and death, they take love as their blade and stride into the storm together…