Three survivors from a distant planet come to earth and attempt to blend into earth's population. Attempting to do just that another alien creature bent on destroying the first three. Also do not forget the Giant Robots.
Posing as head of the Lunis family, Octus buys a house for Ilana. While shopping for furniture, Lance activates his power suit and attracts the attention of Modula who sends a five-headed robot to Earth.
Ilana starts a campaign for better food at Sherman High. A bored Lance begins fighting crime anonymously at night. Mutraddi assassin Xeexi has been sent to Earth to find Ilana and her companions and eliminate them.
Titan defeats a giant blob from Mutraddi, but a tiny piece survives by sticking close to Ilana and ends up in her locker at Sherman High. It grows stronger and larger as Ilana auditions to become a Sherman High cheerleader.
Following the disappearance of his father, young Lance was sent to the Military Academy on Galaluna. There, he immediately encounters a bully called Baron and is soon competing against him to win the Medal of Excellence.
Modula dispatches the most explosive yet unassuming Mutradd creature to destroy the Earth. Titan stops it's decent and the three Galalunans adopt it. Ilana names it 'Mushy' because it loves marsh mellows. Lance admires it's tough hide and names it 'Tarrax' after a great Galalunian General. Octus identifies it as creature 497 and sets out to unlock it's secret.
Kimmy takes Newton to Sherman High's annual Scary Mary party and Ilana and Lance reluctantly go along. A Mutraddi shapeshifter lands in the woods nearby and infiltrates the party, disguising itself as various of the humans present.
Flashback to the day the King of Galaluna was overthrown by the Mutraddi. Lance was the first to catch on to the betrayal while Princess Ilana and her loyal bodyguard try to make it back to her father.
Ilana proposes helps to organize the Homecoming dance and bases it's theme on the Galalunian Harvest Festival. Even Lance is forced to find a date since Octus/Sherman is dating Kimmy and Ilana is taking Jason.
Solomon offers help to the Galalunans and tries to reactivate Octus at G3 Headquarters. But General Steel takes this opportunity to launch an attack on G3 with his H.M.E.R. (aka The Hammer). In the middle of the battle, the Rift Gate opens.