“Bite Sisters” is a fantasy digital drama about Han Yi Na, an 821-year-old vampire who can’t stand seeing injustice. When she unexpectedly becomes a trendsetting influencer with over a million followers, Han Yi Na uses her power to secretly help those in need.
More and more customers come to Bite Sisters to see Han Ina's face. Feeling tired from this, Misook Kim puts up an announcement to look for a part-timer... uh..?! The applicant… ?!
Seongmin is also interested in Ina. However, it is not easy to get information about Ina, who is packed with secrets. Searched the internet for the ‘Vi Vant Hotel’ that she had run before. The opening date is 1934...?
Yina is bothered about part-time worker Sungmin. According to Jiyeon's advice, she decided to ask about reincarnation on social media. Then, a message that caught her eyes arrived... "Do you know how to kill people?"
Jiyeon and Misook are living their lives while getting back at bad people around them. Meanwhile, Ina recalls her past after looking at the flower given by Seongmin... Kyungho who wanted to be with her forever. But she did not want to make her lover become like her.
Han Ina is bored because of the moderately bad people these days...???? What was the repercussion of her boredom?
SNS that started from Han Ina's boredom. No, but this is more fun than I thought... ? Humans are really cute... ?
Jiyeon takes revenge on team leader Choi who stole the design. Meanwhile, a young customer visits the store. Ina and Seongmin go out together to look after a young customer. A text arrives on Jiyeon's cell phone when she arrives at an empty store after work. “Help me, Jiyeon.”
For the first time, Misook makes a human friend. Ina, who was looking at them talking with each other, is deep in thoughts, and eventually, she visits Seongmin. Seongmin shows his sincerity to Ina, who visited him, and he holds the cold hands of Ina warmly.
Ina and Gyeongho's past is finally revealed. The man he loved was just another liar who gave Ina hell. Looking into Seongmin's eyes, Ina is reminded of the hurtful past with Gyeongho. So she says to Seongmin, "You should quit here."
Ina and Seongmin meet Chaewon mother's boyfriend. She smells his blood and feels strange, she approaches him quietly to punish him, and as she tries to bite him, she feels something and turns around...