Lu Zheng, who is 18 years old, is still young, but has been broken up twice in a row. In addition, his family is heavily in debt. His emotional frustration and the difficulties of real life have made Lu Zheng exhausted physically and mentally. Finally, at the suggestion of his creditor Uncle Wu, he went to Singapore to find a way out. Unexpectedly, on the way to Singapore by boat, Lu Zheng gradually discovered that they The destination of the ship was not Singapore, so Lu Zheng took the lead in launching a riot on the ship. As a result, under the suppression of the mercenary organization called Blood Skeleton, the riot led by Lu Zheng was brutally suppressed. Most of the people on the ship were killed by the mercenaries. Only Lu Zheng, Jin Xin and more than ten people survived. In the end, due to some strange combination of circumstances, Lu Zheng Zheng and others were forced to join the mercenary organization called Blood Skull. After undergoing hellish training, the two finally became official members of the Blood Skeleton. While performing an ordinary mission, the two accidentally discovered that the Blood Skeleton mercenary organization was conducting dirty transactions in the dark that exceeded the limits of human nature. The kind and righteous two people could not sit still. The two went through a series of near-death battles and countless conspiracies. After dealing with love and friendship, loyalty and betrayal, Lu Zheng, accompanied by his teammates and his friend Jin Xin, finally transformed from a good-for-nothing boy to a top-notch mercenary, successfully completed his revenge and returned to a peaceful life.