Doom At Your Service

Dong-kyung, a web novel editor with six years of experience, is suddenly diagnosed with brain cancer and given only 100 days to live. Blaming her unlucky life, she wishes for the world to disappear, unknowingly summoning Myul Mang, a messenger between gods and humans.

Dong-kyung makes a 100-day contract with Myul Mang. However, she's shocked to learn the severe consequences of breaking that contract.

Dong-kyung, on an impulse, starts living with Myul Mang. Even in a very short distance of doom and death, Dong-kyung's life is still hectic and plain. Meanwhile, a girl goddess approaches Dong-kyung to stop Myul Mang's plan.

Dong-kyung declares to kill Myul Mang by loving him. She tries everything to love Myul Mang and such attempts bring Myul Mang to an unexpected situation.

Hardly can Myul Mang understand why Dong-kyung ran a risk to save him. Dong-kyung advises him to act and think like a 'human' so that Myul Mang starts following her around.

After Myul Mang's confession, Dong-kyung has a lot in her mind. To put her mind to rest, she makes an extraordinary plan. Meanwhile, Ji-na heads to an alumni meeting after seeing Joo-ik. Will she remeet Hyun-gyu?

Myul Mang disappears after a sad kiss with Dong-kyung. He realizes his cruel fate once again by the girl goddess. By that, Dong-kyung gets shocked by Myul Mang's word.

Myul Mang meets Dong-kyung again. With the twist of fate, however, their happiness does not last long. Meanwhile, Joo-ik goes to Ji-na and the two runs into an unexpected person.

With the unexpected visit of Dong-kyung's aunt, Soo-ja, Dong-kyung and Myul Mang cannot live together for a while. While they enjoy their outdoor date, Hyun-gyu accidentally sees a message on Ji-na's phone sent by Joo-ik.

Dong-kyung gives an unexpected answer to Myul Mang's confession. Myul Mang feels that Dong-kyung seems to be somehow precarious. Meanwhile, Joo-ik tells Ji-na the stories he had been hiding.

Dong-kyung and Myul Mang spend a good time together at Jeju Island. But then, an unexpected person appeears in front of Myul Mang. Meanwhile, Ji-na writes a new novel with a new male character.

The traces of Myul Mang and Dong-kyung disappear entirely from each other's fate. While living their normal lives, the two runs into each other unexpectedly. Meanwhile, Ji-na and Hyun-gyu go on their first date and realize the gap between each other.

Myul Mang hovers around Dong-kyung to find out who she is. At the same time, Dong-kyung feels a strange sense of déjà vu. Meanwhile, Ji-na and Hyun-gyu go on their second date.

Miraculously, Dong-kyung and Myul Mang get to remember each other. Sadly, however, the day of fate arrives. Meanwhile, Hyun-gyu tells Joo-ik about his firm determination.

After Myul Mang disappears, Dong-kyung lives on with her beloved friends and family. But soon, she finds traces of Myul Mang in his house. Meanwhile, Ji-na cannot easily face Joo-ik for she needs some time.

Myul Mang finally becomes a human. He gets a new name, 'Kim Sa-ram', and lives a new life with Dong-kyung. What would their life be from now on?