Cheng Yan travels through time, only to end up becoming an honorable prince in the Middle Ages of Europe. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land. Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders from the realm of evil.

Many strange phenomena have been happening in Yin City. Li Ang—whose alias is Li Risheng—becomes embroiled in an absolute real game of life-and-death, known as Killing Field. Using his above average analytical and deductive skills, he completes different quests assigned by the system, such as eliminating supernatural beings or solving cases, while trying to unravel the true nature of the game.

Twenty-three-year-old Adrian married math teacher Blake in a contract arrangement—money for Adrian's debts, a fake marriage for Blake's parents. Blake didn't know or care about his husband beyond the paperwork. Two years later, twenty-five-year-old FBI agent Adrian goes undercover at a high school, using his youthful appearance to pose as an eighteen-year-old student. When Blake sees his new "student's" profile, he realizes this is his forgotten husband. They agree to keep their marriage secret at school, but Blake discovers feelings he never expected—and a possessiveness he can't control.
