In this world that is pointedly not Earth (so no other continents/Earth countries, a handy solution to avoiding nationalism plotlines), humans have developed various abilities such as gravity manipulation, molecular bond combustion, mass manipulation, mental contract enforcement, etc. These abilities rely on bloodline/lineage, mental computational power as well as on algorithms through which functions controlling these powers are interpreted. They form the basis of power of the various aristocratic families ruling the world, the latter's positions maintained through application of these powers in industry, commerce, politics, the military and society in general, strengthening their descendants through cerebral development to enhance their mental computational abilities, as well as ensuring that such techniques and technology remain known only to their own. Oh, and there exist in this world various creatures hostile to humanity, such as ghosts, devils and demons.

Our MC, Cheng Jinyang, is a youth suffering from inescapable nightmares within which he is attacked and repeatedly killed by monsters, where death merely leads to revival inside the dream. His parents, both deceased, belonged to two different noble families and had married despite opposition from the noble Cheng family (for rather mysterious political reasons) (not much information on the mother's noble family). Thus, Cheng Jinyang, having been rejected by these two noble families, has lived the life of a commoner without the support or education a noble would typically receive, with seemingly meagre/non-existent mental powers and few ambitions.

Enter Xing Yuanzhi, a capable noble lady of considerable potential wielding the mass manipulation powers of the Xing Family who is also his fiancé, once arranged for him in brighter times when Jinyang's parents had been alive. She asks for the engagement to be annulled, unwilling to tie herself to someone without potential or status, and offers to provide him with a stipend as compensation (Marriages for aristocratic children are typically arranged by their families' leaders to enhance their own lineage, so youth normally have little say in it). Jinyang accepts peacefully, but before the decision is formalized, involuntarily and to the surprise of both they realize that Jinyang is capable of both entering the dreams of others (may not be an accurate depiction of what happened), as well as dragging others into his own nightmares. And together in the world of monsters, they find that killing these creatures leads to rapid enhancements in their bloodline power, many times faster than any other aristocratic child. As such, the two resolve to continue the engagement with an eye towards marriage, and hopefully one day develop true feelings of affection for each other...

quickly decide to accept him into their ranks and even promote him upon realizing his prowess, though are quick to attempt to impose a binding mental imprint on him to prevent him from purposefully harming the interests of the family (due to various considerations as well as worry he might purposefully seek to damage their family due to their bad history together). Even then, they keep the antagonism at a very moderate level, and appear to be generally reasonable but selfish actors.