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University students Yoon Jin-Myung (Han Ye-Ri), Jung Ye-Eun (Han Seung-Yeon), Song Ji-Won (Park Eun-Bin), Kang Yi-Na (Hwa Young) and Yoo Eun-Jae (Park Hye-Soo) share a house.
Jin-Myung is busy supporting herself financially and studying. She suffers from lack of sleep. Ye-Eun is devoted to her boyfriend, she is clear about what she likes or not. Ji-Won has a bright personality and likes to drink. Yi-Na is popular due to her beautiful appearance. Eun-Jae is timid, but she has an unique taste for men.
- "Age of Youth" takes over the JTBC Fridays & Saturdays 20:30 time slot previously occupied by "Mirror of the Witch" and will be followed by "Fantastic" September, 2016.
|Han Ye-Ri||Han Seung-Yeon||Park Eun-Bin||Hwa Young||Park Hye-Soo|
|Yoon Jin-Myung||Jung Ye-Eun||Song Ji-Won||Kang Yi-Na||Yoo Eun-Jae|
|Yoon Park||Ji Il-Joo||Shin Hyun-Soo||Son Seung-Won|
|Park Jae-Wan||Ko Doo-Young||Yoon Jong-Yeol||Im Sung-Min|
Additional Cast Members: