Emergency order. Defeat the Metroid of Planet Zebes. Destroy the Mother Brain.
Gametrailers.com - The Metroid Retrospective - Part 1
The last Metroid is in captivity. The galaxy is at peace...
Gametrailers.com - The Metroid Retrospective - Part 2
Samus breaks free from two dimensions and confronts a new villain!
Gametrailers.com - The Metroid Retrospective - Part 3

Samus returns with more portable adventures as she gets ready for her first quest on the Wii.
Gametrailers.com - The Metroid Retrospective - Part 4
The story of Samus, from her Chozo upbringing to her battles across the universe.
Gametrailers.com - The Metroid Retrospective - Part 5