Reverse Module - 3D Idea

You are in a world with two major cities striving for Utopia.

In the first city people have a chip on them that doesn't allow them to hurt other people.

In the second city people have implemented Geoism as an economic model.

In this world there is a disease where a person presents a mark somewhere on his body and another person somewhere in the world presents the exact same mark. The two people have to meet and install a Reverse Module or they die.

Welcome to Reverse Module.