Space Station Vacation

Alec loves outer space! So on Christmas break he stows away on a rocket headed to the space station. When he arrives, Alec builds a comfy nest of wires and settles in for a lovely vacation.
But soon, the space station's robot arm, the toilet, and even the exercise equipment, all go crazy! Uh, oh. Houston, we've got a problem.
Who will save all the astronauts and one small mouse from total disaster?