The action franchise that started it all is celebrating its 20th anniversary with an all-new adventure on Nintendo DS! Set after the events of Contra III: Alien Wars, the game follows mercenaries Bill Rizer and Lance Bean as they battle to save the world from a new extraterrestrial threat. Contra 4 takes advantage of the dual screens of the Nintendo DS to deliver larger than life action, with massive enemies, detailed platforming and mind-blowing set pieces.

Sinopse em inglês, como veio da fonte.

The action franchise that started it all is celebrating its 20th anniversary with an all-new adventure on Nintendo DS! Set after the events of Contra III: Alien Wars, the game follows mercenaries Bill Rizer and Lance Bean as they battle to save the world from a new extraterrestrial threat. Contra 4 takes advantage of the dual screens of the Nintendo DS to deliver larger than life action, with massive enemies, detailed platforming and mind-blowing set pieces.

Sinopse em inglês, como veio da fonte.