In short the plot is:
SPOILER Warning
<span class='standouttext'>Spoiler : </span><span class='spoiler'>
Transport ship wiv criminal crashes on planet, they find abandoned science outpost, seems they left in a hurry. The planet has 3 suns, so it has no night. Except once in X time all 3 suns are lined up and some planet in between those suns and this planet. At night the monsters come out of your closet, well actually the ground in this movie. Vin Diesel Beeing the dangerous, careless, anarchistic criminal who's believed to be the responsible of those dissapearing, ends up saving the last survivors, sacreficing himself. Vin Diesel, Riddick dangerous criminal got his eyes changed for nighsight in some kind of prison with no daylight. Making him the only one capable of saving them. </span> Right?
