The Mutant X team must stop the auction of a highly lethal substance that a number of notorious international terrorists are vying to acquire.

The Mutant X team is brought in to help a military base that has become infected with a deadly disease.

The Mutant X team embarks on a mission to locate and capture a powerful super-mutant who possesses god-like powers.

A revenge-seeking cybernetic mutant uses his powers to overtake Sanctuary's security system in a plot to destroy Mutant X.

The Mutant X team learns about Lexa's estranged twin brother when he becomes the main target of an underground operation harvesting mutant organs.

Brennan and the Mutant X team join forces with a time traveling mutant to diffuse a bomb threatening devastating consequences.

Mutant X tracks down a rogue scientist while Shalimar breaks away from the team to help Adam save the scientist and uncover the real bad guy.

Mutant X unearths an old military experiment involving an age-reversal serum and is surprised to discover that Jesse's grandfather is a one of the test subjects.

Discovering that their teammate Lexa is the subject of a covert experiment that is controlling her, the Mutant X team hunts for the doctor responsible.

The team uncovers many of the mysteries surrounding Mutant X after the Dominion captures Lexa and Jesse.