Heartbeat

A vampire who has one desperate wish, which is to become human and experience love, enters a coffin for a lengthy slumber after hearing from a 1,000-year-old cat that he can become human if he sleeps in a hawthorn coffin for 100 years.

With only one day left in his 100-year goal, Vampire Woo-hyeol fails to become a human being. In-hae encounters a real estate scammer and gets involved in a chase to catch the fraudster, ending up in danger herself.

In-hae finds out that Woo-hyeol is a real vampire. However, what Woo-hyeol buys with her credit cards even makes her more shocked.

Woo-hyeol thinks In-hae could be the reincarnation of Hae-sun. In-hae feels more uncomfortable seeing Woo-hyeol after their first kiss. Yang-nam informs Woo-hyeol of a way that can make him human.

Rumours of Woo-hyeol dating In-hae spreads at school, which results in In-hae losing her job. An upset In-hae drinks heavily and talks about her past to Woo-hyeol.

When In-hae struggles to get a new job, Do-sik suggests she use her mansion as a guesthouse. Woo-hyeol initially stands against the idea but eventually agrees, however, he soon feels jealous after seeing Do-sik's affection for In-hae.