In a world where Satan rules, the only way to survive without punishments is to compete in a series of tests to become the beloved wife of Satan. However, if you compete in the test but are unable to compete it, you will both in the pits of Hell. Matchitehew is a cunning and manipulative woman who was born into this world. Her mother saw evil in her when she was born and named her Matchitehew, meaning 'one who has an evil heart'. When she stumbles upon the test, she decides she will do anything to survive, even if it means becoming Satan's wife. Matchitehew watches the other competitors struggle as she passes with ease. Satan notices how competent Matchitehew is and worries for himself. He created the test as entertainment, he never expected to settle down with someone as inferior as a human. This was the first time a competitor has gotten this close to the final stage. With a few tests away from the final test, Satan concocts a plan. He would disguise himself as a man who would slowly win her heart. But what he didn't realize was how hard they were both falling for each other. As Matchitehew finally reaches the final stage, she realises in horror what it was. Sacrificing the body of someone you love as a peace offering to Satan. By this point, they are both deeply in love with each other, but only one of them knows who the other really is. How will they face this challenge?