Shim Hyung-rae's Detective Q (1985)

Three stupid people who graduated from the philosophy department of the university join forces to set up an office called Human Superpower Development, but even if the school seniors around them are worried that they are crazy, they don't care. Then one day, there are reports of a haunted estate where people are mysteriously dying. It is time for the HSD team to prove themselves, and bust some ghosts!