A K-pop star, Sa-gye, reluctantly enters college, forms a 4-member mixed band, and navigates love and growth through music amid the chaos of campus life.

After a powerful conglomerate chairman is betrayed by his children and wakes up in the body of a young soccer player, he uses his business genius and athletic physique to seek ultimate revenge against his family.

The residents of Hera Palace, a luxury penthouse apartment with 100 floors, have many secrets and hidden ambitions. Sim Su Ryeon, who was born into wealth, is the queen of the penthouse apartment. Cheon Seo Jin, the prima donna of the residence, does all she can to give everything to her daughter. Oh Yoon Hee comes from a poor family background, but she strives to enter high society by becoming the queen of the penthouse, the pinnacle of success in her eyes.