Agil was an S-ranked adventurer who was betrayed by his childhood friend who turned into a slave. As a result, he developed a detest for “slaves”. But, during a slave auction he visited on a whim, he fell in love at first sight with Elenoa, the princess of the Conneria Kingdom, and placed his bid. Becoming his slave, Elenoa revealed to him the agenda she was hiding. “I want to find my former childhood friend who sold me to the slave traders—and kill him!” Agil vowed to cooperate with this revenge that she was willing to even exchange her life for. Bound by the sweet and intimate bond between a master and his slave, the two of them embark on their journey of revenge—.