In order to atone for her sins from her previous life, Wol-joo (Hwang Jung-eum) agrees to go back to the human realm and help people solve their grudges. She decides that the best (and most economical) way to do this is by inviting people to her pop-up bar. As she nears her target of 100,000 lives, she is given one month to settle everything or she will live out the rest of her days in Hell. A series of coincidences leads her to meet Han Kang-bae (Yook Sunjae) who has the unfortunate ability of being able to read the inner most thoughts of others when he comes into contact with them. The pair strike up a deal, and together with Manager Gwi (Choi Won-young), help each other to reach the target and in return help Kang-bae to lead a normal life.