Goblin tells the story of two accidental roommates: a handsome 100-year-old goblin and a forgetful grim reaper who helps the dead pass through to the next world. The goblin (Gong Yoo) is sick of the immortal life, and wants to end it by falling in love with a human. He meets Euntak (Kim Go Eun), a beautiful girl who has a special gift allowing her to see the dead. Coincidentally, the reaper has been searching for her for years, but using her special gift, she has managed to escape from his grasp. Will she be able to continue to see the goblin, but still be able to avoid the reaper?
The search has begun! Goblin (Gong Yoo) wants to end his immortality, in order to stop living life in a never-ending loop. To do this, he has to marry a human bride (Kim Go Eun). Will he meet her?
You never know who you will meet in life. In this episode, the Goblin (Gong Yoo), Reaper (Lee Dong Wook) and Duk Hwa (Yook Sung Jae) will learn how to live together under one roof.
Kim Shin (Gong Yoo) and Wang Yeo (Lee Dong Wook) team up to rescue Eun Tak from a dangerous situation. Later, Wang Yeo meets Sunny, only to find himself tearing up for no reason. Meanwhile, Eun Tak finally admits to being able to see the sword in the Goblin's heart.
Having confirmed Eun Tak’s identity as the Goblin's bride, Kim Shin (Gong Yoo) is torn between living a little longer and ending his life of immortality. Will he concede to fate and have the sword drawn from his heart?
Eun Tak finally moves into Kim Shin’s house. She decides to set some house rules for the Goblin and Reaper, only to have the two immortals scrambling to get mobile phones. Meanwhile, Kim Shin prepares to end his life.
After foreseeing that Eun Tak's future will not include him, Kim Shin decides to end his life. On the other end, Wang Yeo meets Sunny together with Deok Hwa, only to have her drawn towards the rich heir!
Kim Shin manages to escape death once again! Meanwhile, Eun Tak meets her first love and Kim Shin is extremely jealous about it. Now, Kim Shin has to make a decision as to whether he should stay alive.
Eun Tak is surprised to move the sword in Kim Shin’s heart. As she attempts to remove it, a strong push from Kim Shin causes a catastrophic accident. Meanwhile, the Reaper is curious about his past as he weeps to the painting of a woman.
Eun Tak finds out about the consequence of removing the sword. Meanwhile, Kim Shin learns that if Eun Tak does not complete her duty as the Goblin’s bride, she will face death.
The Reaper finds out about Sunny’s past life. She was Kim Sun, Kim Shin’s sister. In order to find out if he is related to them, he attempts to hold her hand again.
Kim Shin finds out that Sunny was his sister in her previous life. Eun Tak’s death call comes close and Kim Shin decides to reveal her fate, as the Goblin’s bride.
Deok’s Hwa’s identity is questioned. Will Kim Shinand the Reaper finally get to speak to God?