Dr. Doh Won is a renowned psychoanalyst. Upon returning to Korea, he takes a position at the Institute for Psychoanalysis and does his best to avoid criminal cases to protect his family. One day, the enigmatic arsonist MJ pays him an unexpected visit. MJ insists on ongoing sessions to address his uncontrollable desire to start fires. Reluctantly, Doh Won agrees, only to discover that MJ is more than just an arsonist; he's involved in something major related to a mysterious figure known only as 'Father.' Will Doh Won be able to extinguish MJ's love of fire? And just who is this 'Father,' and what connection does he have with MJ? (Source: Lezhin Entertainment)