kid takes tests in space

A science class builds a model rocket somewhere in the middle of the desert to test out the ability to deliver a live test subject into space and return it safely back to Earth. The test subject in this case is a mouse who will ride in the rocket via its capsule. A young boy, who is the caretaker of the mouse, is afraid for the mouse's life.

Short animation

Two boys try out a home-made flying machine in their children's room at night. For another test, a rat that the boys keep as a pet is thrown out of the window with a small rocket. After this has also worked, the first boy stands on the windowsill ready to jump into the yard. At this moment, a man suddenly flies into the children's room from outside through the window, introducing himself as an inhabitant of Mars.

A boy on another planet builds a ray-gun and breaks something in his house and is sent out by his mother to go play in space.

A cosmic adventure begins...