Complex sentence: It is the fourth main installment released in the "Metroid" series, and its storyline centers around Samus Aran, a famed galactic bounty hunter, who is forced to battle legions of parasitic creatures aboard a space station.
Split into simpler sentences: It is the fourth main installment released in the "Metroid" series. The story centers around Samus Aran, a famed galactic bounty hunter, who is forced to battle legions of parasitic creatures aboard a space station.