Children interested in science, history, and the process of invention and discovery.
The Fixies introduce their new invention: a time machine. They can travel to the past and future.
The Fixies reveal their time machine, a modified garbage processing unit. Alt Crystal is also back.
Professor Chudakov attempts a time jump to test his hypothesis. Something goes wrong, and Alt is lost.
The professor finds himself in the past and discovers Hero of Alexandria's self-opening doors, a steam turbine, and more.
The Fixies confirm successful travel to the past. They realize only small beings can travel through time.
Professor Chudakov discovers a new star and becomes famous. Verta also appears on a magazine cover.
The video emphasizes that people have always explored and discovered new things, encouraging viewers to be curious.