Plot: The residents of Hera Palace, a luxury penthouse apartment with 100 floors, have many
secrets and hidden ambitions. Shim 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. A battle for wealth, power, and prestige at Seoul’s most coveted penthouse begins.

Main: Shim Su-ryeon is a graceful, elegant woman who is kind and thoughtful, despite her immense wealth. She and her husband, Joo Dan-tae, live in the penthouse of Hera Palace, making her the queen of the penthouse. Learning of her husband's affair with Cheon Seo-jin and his involvement in the death of her daughter Min Seol-ah, she is determined to take revenge against him. Later in the series, she is also revealed to be the biological mother of Joo Seok-kyung.
Cheon Seo-jin is a wealthy woman who would do anything for power, money, and pride. She and Oh Yoon-hee have been bitter rivals since childhood. She pushes her daughter, Ha Eun-byeol, to sing in order to beat Oh Yoon-hee's daughter, Bae Ro-na, who is more talented than her.
Oh Yoon-hee is a woman whose dreams have been stunted by her lack of money and power. She does everything in her power to move up socially and financially so that her daughter, Bae Ro-na, is able to enter the prestigious Cheong-ah Arts School.

Review: This is one of my favorite and lowkey the best kdrama ever! The characters are so relatable. This drama shows us that parents will do ANYTHING for their kids, even if it means becoming evil. We all need to take risks.