"Longtou" was told by his mother that his father had died since he was a child. He always thought that his father had died in a car accident when he was very young. At the age of nineteen, he went to college according to his mother's will, but he didn't know that since he stepped out of this step, he laid a century-old myth of the whole underworld, and the whole underworld was doomed to be lonely for a hundred years after him! H Vocational College, a university jointly founded by Hong Men and green gang, mainly trains or selects underworld talents. More than 3000 people enter this university every year, but only 300 people graduate from it every year! Where more than 2700 people went, no one will care, or die or flee, and no one will ask! In a sense, this university has become a recognized existence, recognized by the government! Undeniably, the underworld is the second security organization of a country, and the gang of guys and girls is the country's dark police, so this university is recognized! In this school, there is no justice, no black or white, only rules, a rule that everyone must abide by, and that is-live! No one dares to ignore this rule, otherwise, he will never leave this school! Of course, those who can walk out of this school are not simple people, and the future is limitless. Therefore, although the students in this school are often close to death, there are still so many people who want to come to this school and fight for that little chance! He entered the university that year, and in order to survive, he made himself play the role of a cripple. However, in this school, there are only two kinds of students, one is alive and the other is unknown. As long as they are alive, they will be challenged by others! I have been obedient since I was a child, and I have suffered humiliation and tasted warmth and warmth here. Everything broke out that day. His mother's death, his lover's betrayal, his friend's injury ... all stimulated him deeply. The meek sheep suddenly became a fierce lion! However, all the answers were revealed the next day. It doesn't matter who is right or wrong, what matters is who is bleeding! Because of him, only seven people graduated in that session, and because of him, the whole underworld is changing! After he left, in order to commemorate him, the underworld called that day the dragon went out of the customs, and the six people who graduated with him were also honored as six evil spirits!