Junkyard owner Twaddle Duff contacts Captain Thrice to tell him of a customer who is willing to swap information about Lavender Castle for the Paradox's rare MD646 engine. Isambard refuses for his engine to be taken away but soon discovers he has no choice in the matter, as the engine has gone!

Dr. Agon tricks the Twaddle twins into delivering a Starfighter to Captain Thrice as an anonymous gift. When Roger test flies it, the Starfighter goes out of control, breaking through the light barrier. The Starfighter comes to a stop at the other end of the galaxy with no way back for Roger.

Sproggle's birthday is coming soon and the young orphan wants a pet but Captain Thrice won't allow one on board the Paradox. Unknown to the captain, Sproggle is given an invisible dog called Wearizy by junkyard twins Twaddle Duff and Twaddle Dim. There's more trouble when Dr. Agon gatecrashes Sproggle's birthday.