Following her earlier mission to defeat the Space Pirates, Samus Aran boards a drifting pirate frigate and chases the escaping Ridley to Tallon IV — a complex, interconnected world built over ancient Chozo ruins, inhabited by lethal wildlife, and carrying secrets that deepen the further she pushes into it. The first 3D Metroid game renders the series' exploration-driven formula through a first-person perspective across a richly structured planet.