A third installment of the Maniac Series. (Sort of San Centered now.)
After dealing with Wooyoung's past and trying to have a stable marriage, San finds himself in an impossible position when his dynasty under Jongho, is being threatened by Jongho's own father, Seongcheol, making his marriage life even more difficult when he is forced to surrender the dynasty or surrender the heir to the relique, Wooyoung, forcing him to rely on Hongjoong and Seonghwa, and the so-called friend that betrayed Wooyoung, Yeosang.