Among the episodes featured on volume three are the ones covering the "Dark Phoenix" saga. Disc one of volume three features the two-part "Savage Land, Strange Heart," "Obsession" and, as mentioned, the four-part "Dark Phoenix."
Disc two features "Cold Comfort," "Orphan's End," "The Juggernaut Returns," "Nightcrawler," "Weapon X, Lies, and Video Tape," the two-part "One Man's Worth" and "Courage."
Story:
In volume four, the X-Men join forces with heroes of the future when Apocalypse, a mighty mutant, is driven completely mad by his powers. The episodes on disc one are the two-part "Proteus," the two-part "Sanctuary" and the four part "Beyond Good and Evil."
Disc two features "Have Yourself a Morlock Little X-Mas," "The Lotus and the Steel," "Love in Vain," Secrets, Not Long Buried," "Xavier Remembers" and "Family Ties."