Cosmonauts investigate an asteroid belt between Mars and Jupiter. They believe that it might be the remains of a planet. Parallels are drawn to the Greek god Phaethon, who in Greek mythology was the son of the sun god Helios.

Cast:Yuriy Yakovlev, Mariya Babanova, Nikolay Burlyaev, Aleksey Konsovskiy, Nikolay Burlyaev,

Genre:Science Fiction, Animation, Fantasy,

country:Soviet Union,

Production:Soyuzmultfilm,