A publicity poster for "Orange Marmalade" starring Yeo Jin-goo (top), Seolhyun (center) and Jonghyun. (KBS2)

The vampire TV drama “Orange Marmalade,” based on the eponymous Web cartoon, has rewound its plot 300 years into Korea’s Joseon Dynasty.

The drama series, which had until its fourth episode taken place in modern Korea, turned back the clock three centuries to a fictional time when vampires and human beings forged a peace treaty.

The main characters -- including Jung Jae-min (Yeo Jin-goo), Baek Ma-ri (Seolhyun), Han Si-hoo (Jonghyun) and Jo Ah-ra (Gil Eun-hye) -- appeared in the fifth episode Friday clad in hanbok, Korea’s traditional costume.

Actor Yeo Jin-goo and Gil Eun-hye from "Orange Marmalade," episode five. (KBS2)

In the latest episode, both Jae-min and Si-hoo were captivated by Ma-ri’s flute performance. Meanwhile, Ah-ra is set on winning Jae-min’s heart and obtaining his hand in marriage, in spite of her father‘s arrangement to set her up with Jung Byeong-gwon (Jo Min-ki).

Actors Seolhyun and Jonghyun, who both play teenage vampires in the high school TV drama, are K-pop singers from girl group AOA and boy group CNBLUE, respectively.

The upcoming sixth episode this coming Friday will continue the plotline of Ah-ra’s quest to win Jae-min’s affections.

“Orange Marmalade” airs every Friday at 10:35 p.m. on KBS2.

Actors Yeo Jin-goo (top right) and Seolhyun in "Orange Marmalade," episode five. (KBS2)

By Yoon Sarah (sarah356@heraldcorp.com)

Related article: 'Orange Marmalade' sees unexpected surge in popularity