Han Woojin, the lab-bound restless spirit, is a man driven mad by science.
When he becomes extremely absorbed in his experiments, his excitement escalates from erection all the way to ejaculation.

His colleagues even go so far as to call him “Mad Woojin” when he’s in that state.

One day, Woojin hears a rumor about a place near the lab called Deokmu Mountain, where a goblin is said to live one that gives gold to people.

Though he doesn’t believe in supernatural superstitions, his curiosity leads him to visit Deokmu Mountain.
There, he encounters a goblin the god of wealth, Baekbaek.

In order to scientifically prove Baekbaek’s existence, Woojin enters his Mad-Woojin state once more…

“I’m not interested in lumps of gold like that!
When there’s… such a lovely test subject right in front of me… ♥