Irene, the wife of a minor noble in the Kingdom of Westaria, receives devastating news—both of her parents have died. When she searches for her husband, Cosmos, she discovers that their marriage was a sham, meant only to bring down her family. Unable to bear the betrayal, Irene takes her own life—only to awaken six months before her wedding day. This time, armed with her exceptional medical skills, she vows to take revenge by drawing close to the kingdom’s regent, Base. Meanwhile, Cosmos still engaged to Irene—begins to falter in the face of her sudden coldness. Between these two men, will Irene succeed in carrying out her revenge?