For four years, the courageous crew of the NSEA protector - "Commander Peter Quincy Taggart", "Lt. Tawny Madison and "Dr.Lazarus" - set off on a thrilling and often dangerous mission in space...and then their series was cancelled! Now, twenty years later, aliens under attack have mistaken the Galaxy Quest television transmissions for "historical documents" and beam up the crew of has-been actors to save the universe. With no script, no director and no clue, the actors must turn in the performances of their lives.

When an armed, masked gang enter a Manhattan bank, lock the doors and take hostages, the detective assigned to effect their release enters negotiations preoccupied with corruption charges he is facing.

Martin Lawrence plays Jamal, an employee in Medieval World amusement park. After nearly drowning in the moat, he awakens to find himself in 14th century England.

Matt is a stubborn, widowed owner of a classic car restoration shop. When Matt's estranged daughter Riley and her teenage kids move into his house, the real restoration begins.