green baseplates, two blue baseplates, and one grey baseplate).
(found in this set). The monster attacked them, but failed (of course).
Turns out he was trapped by meltrocks (a rock monster). My character, Liam's character (named "Zap"), and Mom's character quickly saved him. The professor then explained that the "grand leader of the bad guys" were the aliens.
It was then, however, that they saw who the real villain was...
It was Buzz Lightyear! He'd turned EVIL!
Everybody was back together and happy (except the evil bad guys). The end.
So fun. :)