Kazuo Sugishita was demoted to artist assistant by the president for contradicting his boss, and had to go out to work with stargazer Shiro Hoshizono. The two were invited to a mountain resort, but they were trapped in heavy snow together with UFO researchers, novelists, and their secretaries. The sudden murder panicked everyone, and the delay in waiting for rescue made their situation worse. Hoshizono and Sugoshita temporarily serve as "detectives and assistants", working together to find the truth of the case.
But when the seemingly incredible phenomena and all illogical behaviors have reasonable explanations, the case investigation has fallen into a puzzle. Where is the secret murderer hiding?
