Firefly: Season 1, Episode 2

1 - 2: Bushwhacked

On a salvage mission aboard a drifting colony ship, the Serenity crew find signs that the crew were killed by the cannibalistic Reavers. They find one survivor, but things take a turn for the worse when an Alliance ship looking for an unspecified Firefly-class ship with brother-and-sister stowaways shows up and takes them in.