These shows dramatize the storyline that originally kicked off the major Superman revamp in 1986. Check out the first handful of issues of Superman (vol 2) for the comic book version of this story.

Disc 548 The Adventures of Superman, Part 1 (excellent)

Disc 548 The Adventures of Superman, Part 2 (excellent)

Disc 548 The Adventures of Superman, Part 3 (excellent)

Disc 548 The Adventures of Superman, Part 4 (excellent)