Explorers (1985)

"The adventure begins in your own back yard."

Middle schooler Ben spends his free time watching sci-fi films, playing video games and reading comic books. Surprisingly, his affinity for all things fantastical yields a real result – when he has a vivid dream about technology, his prodigy best friend Wolfgang manages to create a working spacecraft. Joined by their buddy Darren, the boys take off into outer space and encounter some very odd extraterrestrial life.