Korean grandma Oh Mal-sun magically becomes young again; she gets a chance to pursue her singing dream as an idol, leaving behind family troubles.

Korean grandma Oh Mal-sun magically becomes young again; she gets a chance to pursue her singing dream as an idol, leaving behind family troubles.

Du-ri, Ji-sook, Min-seok and Janet meet each other; Janet, the woman who looks just like Mal-soon, is actually Mal-soon's younger sister Kkeut-soon; Janet plans to approach Mal-soon's family, but Mal-soon has already erased her from her life.

Du-ri gets another chance when the video of her at a song festival goes viral; Ji-sook feels more disturbed by day because of her father and the competition at her company; Janet eventually enters Mal-soon's house.