Uncover: Secret Love Letters Urban exploration, UE or Urbex is the exploration of man made structures, usually abandoned or places hidden from the public. And that's what Primo, Ace, and Uno do. They explore and discover. They trespass, document it and they escape. They were once at the top of the flatform, but it was not the case now. Their videos got lesser views as the time goes by and they need to do something. And when they thought everything was finally falling into places, one of them broke the UE code. Will this be the end of their friendship, or a start of a great adventure?