Three women who live at Seoul's most luxurious penthouse apartment will stop at nothing to protect their status and their children's futures. But a murder at Hera leaves one mom questioning her place in this elite society and puts her on the road for revenge.

• Lee Ji-ah
• Kim So-yeon
• Eugene
• Park Ho-san
• Uhm Ki-joon
• Shin Eun-kyung
• On Ju-wan
• Bong Tae-gyu