[s1e1] Episode One Today

Mark is promoted after his best friend Petey "leaves" (is fired/missing).

Lee Dutton, John’s eldest son, is killed in the skirmish ( TV Tropes ). [S1E1] Episode One

This episode introduces the Dutton family and their fight to keep their massive ranch. IMDb (IMDb) provides a clear high-level summary of the pilot. Mark is promoted after his best friend Petey