Plot: J’onn J’onzz must find out who is responsible for the genocide of the Green Martians. It later turns out that his brother Ma'alefa'ak killed a White Martian which infuriated the White Martians who were already racist towards the Green Martians and became the catalyst for the Green Martian genocide. He also must use his investigative skills as Detective John Jones to apprehend an unknown killer.
Post Credits Scene 1: Martian Manhunter sees a mysterious meteorite that releases out mysterious spores into the air. These mysterious spores start to infect the people of Earth.
Post Credits Scene 2: A mysterious red demon murders the parents of a young girl.
