Chen Feng (codenamed "Yan Luo"), the former captain of China's strongest special force "Dragon Soul", was framed by his brother Wu Feng (codenamed "Shadow") and imprisoned for five years in the bloody prison "Black Abyss" overseas. After returning, he looks for his sister Chen Xiaoya, while tracing the truth about his betrayal, fighting against the genetic modification conspiracy organization "Ark", and restoring urban order.
