KBS2 has released a longer teaser for drama 'Heartbeat', a life-threatening symbiotic romance between two unlikely characters. 

In the drama, 2PM's Taecyeon plays Seon Woo Hyul, a half-human vampire who fails to become fully human. Won Ji An plays In Hae, a woman who lacks humanity, but fate brings them together, and they start sharing a life.

The drama's latest teaser opens with In Hae heading to the basement of her father's building where she finds a mysterious coffin. Inside, Woo Hyul had been in a deep slumber of nearly one hundred years, hoping it would turn him human. Annoyed at the missed opportunity by a day, he bares his fangs and faces In Hae.

Yoon Byung Hee and Ko Kyu Pil play the role of other vampires, who wake up after sleeping for a long time to find out that Woo Hyul has been awakened. They realize how much the world has changed and must live as vampires in the modern age. To support himself, Woo Hyul takes on a job as a cleaner at a high school where In Hae works as a health teacher. The teaser ends with a playful moment involving Woo Hyul and In Hae sharing instant noodles at a convenience store, providing a glimpse of the chemistry between the two leads.

The first episode of 'Heartbeat' is scheduled to air on June 26 at 9:45 PM KST.