Let's Fight, Ghost) is a South Korean television series starring Ok Taec-yeon, Kim So-hyun and Kwon Yul.

In order to be freed from endlessly wandering the earth and be able to ascend to the next life, Hyun-ji convinces Bong-pal to let her move in, and the two become ghost fighting partners.

In March 2016, tvN announced that they would be adapting and producing a drama version of Hey Ghost, Let's Fight, a popular 2007–2010 manhwa by Im In-seu, under the same title.

On one occasion, he receives a call to a girls' high school where he meets Hyun-ji, a wandering ghost searching for memories about her identity and death.

During a brief fight with Hyun-ji, Bong-pal accidentally kisses her, which causes her to remember a fragment of time showing the scene of an accident she was seemingly involved in.

Two of Bong-pal's upper classmen, Cheon-sang and In-rang, try to enlist him into their club, GhostNet, where the duo supposedly films ghosts and paranormal entities.

Meanwhile, the GhostNet club examines the footage they filmed at the girl's high school, deducing that they have to get Bong-pal recruited or followed because he really can see and fight ghosts.

After finishing the shopping, Hyun-ji sees a pink dress she likes and wants Bong-pal to buy it for her and give it to her by burning it.

Then it is shown that at late night yesterday she witnessed that Hye-sung killed the cat that scratched his hand and dropped his pen on the scene during the act.

Back at Bong-pal's apartment, Hyun-ji falls asleep in the midst of the tutoring session, and after waking up, she sees that the "forbidden room" has its door slightly open, so she takes a peek inside and sees a pair of high heels and asks Bong-pal to give it to her, but this upsets him and tells her to stop trying to act like a human when she's a ghost.

Meanwhile, at the police station, Detective Yang starts to work on the case of Noh Hyun-joo, and finds it strange that her neck was broken which is impossible to happen by a human's hand.

Lim Seo-yeon goes to Hye-sung's clinic with the dog she adopted from it, and she says that she need a temporary shelter for it, because she and Bong-pal is going on the group vacation, and also gives him a new, white fountain pen as a gift.

Back at home, she takes her new test, and she scores 82 points, and having succeeded Bong-pal's expectations, she says that she wants to visit the amusement park, and they agree on a specified time.

Detective Yang asks the coroner about the nature of Noh Hyun-joo's death, who says that it is hard to get that strength for an average person.

Then the next day, Bong-pal and Hyun-ji go for a date, and he buys some new clothes for her, watches a movie with her at the cinema, and eats out with her, then holds an umbrella above her when it starts raining on the way back to home.

Then, while searching the person at the upper level, Cheon-sang and In-rang capture the "ghost", who then revealed to be a former student who's now being a germanium salesman and hiding around the university.

At the memorial place of Bong-pal's mother, Hye-sung talks about why he (the ghost possessing him) did her accident, but the monk around sees him being there for a quite long time, but then he leaves.

Bong-pal searches for Hyun-ji on the places they used to go, then at Sundae Soup, Cheon-sang notices that In-rang is getting boozed up, and outside, has a talk with Lim Seo-yeon.

Then Bong-pal awakes, sees the message left by Myung-cheol, then eats the meal ordered by him, and throws Hyun-ji's belongings at his place in the garbage bin.

Then, Myung-cheol gets a call from the virgin bodhisattva, in which she details that he needs to visit the temple where is the memorial place, because the monk there has some information for him about Bong-pal's father.

The monk there details that there was a man staying in front of memorial place of Bong-pal's mother, and he identifies Hye-sung as that man, and also notes that he also was there five years ago, when he last seen Bong-pal's father, who was taking a baggie from his wife's memorial place, then the monk also notes that ran away when he saw Hye-sung approaching.

Then, at Bong-pal's apartment, Myung-cheol doesn't find him, so then he calls his phone, which Cheon-sang answers and tells him that he's at the Hanil University Hospital.

Then Cheon-sang and In-rang give him his backpack that he left at the hospital, and also tell him that Hyun-ji was a victim of a hit-and-run accident and has amnesia because of the trauma, and that's why she can't remember him, but she'll get her memories back over time.

Sundae Soup then plots revenge against the person who caused Hyun-ji's accident, then they search for the business card of the police officer who questioned them when Sadako died.

Then, Hyun-ji's mother gives her a new phone, which she checks out, and Bong-pal arrives with her books, then he formally introduces him to her, and shows her his student ID, then he tells that he's her boyfriend.

At one day, Bong-pal is making her favorite dishes, and after leaving the exercise, Hyun-ji sees Hye-sung doing pet therapy at the hospital, and then has a small talk with him, saying that she would have applied to Myungsung University before her accident, and would have graduated by now.

Hye-sung soon arrives in the clinic, and downstairs, Myung-cheol avoids his suspicion by telling him that he went to the wrong room while searching the bathroom there.

At the next day, Bong-pal makes bean sprout soup for Myung-cheol, and tells him that Hyun-ji gets discharged from the hospital and goes to see her.

Then outside, he gets informed by Cheon-sang that Sundae Soup is at the verge of disbanding again, because the former members (In-rang and Lim Seo-yeon) have graduated, and no new freshmen are willing to join it.

A Thai remake, titled Let's Fight Ghost was broadcast in Thailand in the first half of 2021 by True Asian Series, True4U, and NETFLIX; it stars Suppapong Udomkaewkanjana and Patchanan Jiajirachote of BNK48.