Kim Yeong Ho / John Kim

Yeong Ho is a personal trainer of Hollywood stars in America where he uses the alias John Kim. After a Hollywood scandal with a famous actress puts the spotlight on him, Yeong Ho returns to Korea to wait for the scandal to die down. On the plane back to Korea, Yeong Ho saves Kang Joo Eun after she suddenly collapses. A series of events bring the two together on several occasions with Yeong Ho saving Joo Eun from pitiful situations several times. Things become further complicated when he is prevented from returning to America by his grandmother, the CEO of his family's company, who hopes Yeong Ho will one day become her successor. Despite his personal and family issues, Yeong Ho has a kind heart and tries to help others.