The trailer for They Came From Upstairs comes exclusively from MTV.
A group of children attempt to defend their Maine vacation home from invading extraterrestrial forces as the malevolent aliens make their way from the upper floor of the house to the ground level. First-time feature filmmaker Thor Freudenthal directs a script penned by British scribe Mark Burton (Wallace & Gromit). High School Musical's Ashley Tisdale stars in the 20th Century Fox production, with Tim Meadows and Gillian Vigman filling out the rest of the cast.