Brent Jones

In the first part of the two-hour series premiere, the world is left in tatters after a sudden, unprovoked and unexplained invasion by aliens, leaving the planet's remaining human population to fight for survival against the occupiers. History professor Tom Mason (Wyle) has been named second in command for the 2nd Mass, but his real focus is on his three sons, one of whom has been captured by the aliens for an unknown purpose.

While scouting for supplies, Tom, Hal (Roy) and their squad encounter a gang of marauders determined to get their hands on the 2nd Massachusetts' weapons in the second part of the two-hour series premiere. Leading the gang is an ex-con named John Pope (Cunningham), who decides to use his hostages as bargaining material.