Luhan came back to redeem his sins for his wife, Krystal. He realized that he loves Krystal but because of his self-esteem, Krystal had been tortured by him on their early marriage. Krystal who was a naive and plain girl changed drastically. She became a new one as a bad girl. She had promised to herself to destroy Luhan's life. Krystal made a challenge that 'Luhan had to something to make her accept him back, in about fifty days'. Will Luhan enable to get Krystal back? And Krystal, could she