In the lands just beyond where humans call home and scratch out their perilous existence is a place filled with danger and demons. Alinea, a skilled scavenger, and her partner Seth, make a precarious living venturing into these dangerous lands in search of valuable resources. . When Seth vanishes following an ambush by several demons, Alinea's search leads her deep into demon territory and into the possession of Rennik, a powerful and enigmatic incubus. As part of a risky bargain to continue her search for Seth under the protection of this powerful demon, she agrees to play the role of Rennik's pet, a dynamic that evolves into a profound and darkly romantic bond. Alinea discovers Rennik harbors his own secrets; a tragic past, a self imposed penance, and a power that will slowly kill him.  Their complex relationship deepens, and Alinea finds herself torn between her sense of duty to reclaim the life she once knew and the intoxicating world of desire and passion Rennik offers. Alinea must make a choice to embrace her new role or deny her new found feelings as Rennik's health falters after a battle with another demon lord, the choice becomes one of life and death.