Game objects doesn't render out in GUI Menu

My problem is very simple, I have a game right? And game has menu… In menu I have options, which panel is transparent totaly, because in background I have objects like cubes and containers, but all of this doesn’t render out or something, but if I put it really close to UI, then it renders out something, but its more like 2D model, please help… Thanks

Ohhh, I figuer it out, I had to add camera to scene, thanks anyway