The series tells the adventures of two pairs of antagonistic heroes. They travel on the Road of Worlds - a huge transport artery of the Universe, along which there are windows to different worlds. ... In the series "In Still Waters", Koala manages to fully charge the Key, but the giant warriors wake up, they rush to the road and force Koala to seal the window. Koala and the Bird escape to another world whose inhabitants throw their old people into a deadly device.
