Ryu Seo-woo is an award-winning best vocalist who tragically died in a plane crash and transmigrated to a BL novel, "Serenade Me, My Angel," which he read out of boredom. He transmigrated into the body of the sub-villain, who shares his name but is a C-list singer with a ruined voice due to throat damage. Living in a decrepit house with his five-year-old triplet sons (Seo-jun, Seo-min, and Seo-jin) who despise him for years of neglect and verbal abuse, Seo-woo is determined to rewrite their lives. The novel's main couple, the stoic CEO Moon Woo-seok and his innocent, angelic singer Jin Yu-jin, are destined for a happy ending. In the original story, Seo-woo's character dies in a fire, leaving his genius triplets to be adopted by the main couple. However, the transmigrated Seo-woo has no intention of dying or letting the original plot play out. Can he win over his sons and forge a new path?

Suho Kim, a broke college student struggling to make ends meet, is desperate to turn his life around by earning a degree in civil engineering. But going from rags to riches will be easier said than done-especially after Suho suddenly wakes up inside the fantasy novel he had been reading every night as Lloyd Frontera, one of the worst side characters. Lloyd is a lazy, hot-headed drunkard whose family is on the brink of ruin due to an enormous amount of debt. Lloyd may not be the most reliable guy, but Suho isn't ready to give up so easily-he refuses to live in poverty again. Luckily for the Frontera family, Suho has something up his sleeve that may end their financial woes: his studies in civil engineering! With the heart of an entrepreneur and the brain of an engineer, can Suho finally build a better life for himself? All Rights Reserved Written by BK_Moon.