Phineas and Ferb have found that their dad has purchased stars. Striking inspiration, the boys build a spaceship to travel to their stars. Candace accidentally comes along as well. Perry takes advantage of the situation as Dr. Doof's latest plan turns out to be in outer space. The car also comes along for the ride as well.
This Episode contains tropes of:
- Asteroid Thicket: The boys and Candace have to fly through one of these.
- Callback: To "Rollercoaster" when a satellite actually does crash near the house.
- Comedic Underwear Exposure: Both Phineas and Ferb end up with their clothes blown off, leaving them in just their undies, when their first rocket explodes.
- Failure Montage: One of these is used to show that the boys' first attempts at building a rocket are less than succesful.
- Flapping Cheeks: It happens first to Phineas as he's training on a makeshift centrifuge (actually a merry-go-round), and later to Candace once she finds herself on board of a starting rocket (she complains that she can't hear anything because the flopping cheeks are covering her ears.)
- Reality Ensues: When the rocket runs out of battery, they need a jumpstart from the car. Candace is chosen to go to the car, since she has her learner's permit. She asks why they can't just manufacture a battery, leading to this.Candace: "What? Oh, no, no, no, no, no. Can't you guys just find some old nuts and bolts lying around and Jerry-rig up some kind of machiney-deely-bob and get us out of this situation?"Ferb: Candace, we are just kids.
- Running Gag: The usual "aren't you a little young to X" gag is averted in both directions. Phineas points out that, legally-speaking, he and Ferb are too young to start/drive a car, and Ferb deconstructs it.
- Spanner in the Works: Unsurprisingly for this episode, Linda, as she is the one who moves the car, but its engine is still connected to the rocket, causing it to blast off with mission control.