There exist two opposing groups. These groups fight each other for the possession of certain special relics. These relics are imbued with some kind of power, and each group wishes to use it its own way. It's not like a group or the other is evil or good. They just have different goals. I'm affiliated with one of the, or at least work for them. I don't seem to be really engaged in their cause, so I'm guessing I was doing it for the money or something like that. I'm now exploring an industrial area - all here is gray floors and walls, with several pipes coming out of the ground or along walls and steps.
I walk up to some kind of switch and activate it. A pipe opens and launches some colored coins in a square open area. There are yellow, red, blue and green coins. Those varied value (green being the most value and yellow the least), and they looked 3D, like coins from a Mario game. I touch them and automatically pick them up, and as in a game a counter increases on my sight, as if I was looking at a screen. I moved around and collected others, activating more switches. Eventually, the whole scene restarts and I do it all over again.
