Appearance, wealth, the trait of the dominant Alpha, and even a beautiful wife who could stand as a trophy. There was no flaw in the life of ‘Woo Seung-joon’, which was perfectly crafted like a diamond. Until the world’s most beloved wife, ‘On Ji-an’, asked for a divorce. “I also want to meet Alpha who is eight years younger than me.” Should you make ‘Woo Seung-joon’s’ marriage a failure just for that reason? In a desperate moment when he has to change the heart of his wife who has been asking for a divorce, Seung-joon… He returned to his 20-year-old body! It’s top secret that the only successor of the TK group has turned into a slimy 20-year-old youngster overnight. Seung-joon thoroughly disguised his identity as ‘Seon Woo-young’ and wandered around his wife ‘On Ji-an’, who was preparing to return to the entertainment industry under the stigma of…“The nation’s first love who disappeared after married his sponsor.”  “Ji-an-ah, I’ll become the man you will love again.” Seung-joon (aka Seon Woo-young, a trainee at SJ Entertainment) has become 8 years younger than his wife. Would he be able to make On Ji-an, his wife, who has despised him for the past two years of their marriage, fall in love with him again?