Our world, like everyone else, is isolated from others. But the worlds are like soap bubbles, each flying along its own path in space, with the only difference being that each world is protected by a thin etheric energy shell that preserves its integrity. Sometimes worlds collide, and at the moment of collision the walls of the worlds are deformed, these shells are disturbed, which is why creatures from other worlds can get to us, and from our world to others. How often do they collide? Unknown... Some worlds collide more often, others less often. Leaving the house or simply driving out by car, you may arrive at a different place than you planned. It is very difficult to explain the inexplicable...