Synopsis:

Glory City, the last stronghold of Humanity, where those with a spiritual essence can become the protectors of the kingdom against demonic beasts. While he is of red gasoline (the weakest of the 7 gasoline colors), Nie Li dares to humiliate his teacher, who is part of one of the 3 Great Families, the sacred family, in front of the whole class while the director and a VIP are present. A bet follows: if Nie Li passes the tests in 2 months, she will resign from her post, otherwise he will have to leave the academy. Will he win his bet? And where does all his knowledge come from which enabled him to humiliate the sacred family in this way?