Two young people begin the ascent of an impressive ice fall, in a mountain landscape frozen by winter. The boy who remains below, impressed by the hostile environment, or perhaps because he is paralysed with cold, begin to dream…In a futuristic setting, populated by gigantic machines, the two friends run after the disc that permits a super-computer Kubernis to comand time and space. Its humanoid servant, the frightening Concassor, chases the two bold people to reduce them to dust, but they climb a cliff which leads them into a maze of tunnels where a mysterious wise man saves them from the Cocassor. The return to reality, at the foot of the column of ice, permits the two boys to conquer the ice fall.