The second manned expedition to Mars landed. These Martians were not that impressed to have them visiting their house. When they announced where the astronauts had come from they sent them to Mr. Iii's. Mr. Iii tricks them into signing a paper that's a contract for a psychiatric hospital. Mr. Xxx, a doctor there, then gets them to show Mr. Xxx their rocket ship and after killing them for being "crazy" he kills himself because he believes they had infected him in some way.