The Taelons introduce interdimensional travel to human customers for the sinister purpose of harvesting them for genetic experiments.
Before their parents got married to one another, 15-year-old Derek and 14-year-old Casey ruled their respective houses as the oldest sibling. Now they're in constant rivalry for top dog status of the five kids all living under one roof. The two teens will plot anything they can think of at school, with friends or other siblings to win these funny family battles.
Casey (Ashley Leggat) is shocked when Derek (Michael Seater) is selected to be a prefect at school and sets out to prove he's not the man for the job; Edwin (Daniel Magder) and Lizzie (Jordan Todosey) are jealous that Marti (Ariel Waller) always gets her way.
Casey is disgusted with her fellow students' apathy about the upcoming school election. Corey Plunkett expects to be a shoe-in, until Casey convinces Derek to lend his cool factor to the process by running himself
Derek's band is so desperate for a singer that they ask Casey to join; even though she's more folk than metal and thinks they're a bunch of posers. George, remembering his rock 'n roll youth, longs to join the band himself.