Warning: Do not open if you haven't yet read Hell University. This is just a sequel of that book. Thank you!

Eun Ha-won (Park So-dam) is a high school student who dreams to be a teacher, but she needs money for her education. One day, she meets the Chairperson of the Kang enterprise who offers her the chance to live in his house with his three grandsons, under some conditions. At the Sky House, she meets Kang Ji-woon (Jung Il-woo), a soft hearted but lonely and wild-child rebel, Kang Hyun-min (Ahn Jae-hyun), a playboy plutocrat who does whatever he wants, Kang Seo-woo (Lee Jung-shin), a top singer-songwriter who is gentle and kind to Ha-won, and finally Lee Yoon-sung (Choi Min), the Chairman's secretary and their bodyguard. . . . All rights belong to TVN & Dramabeans