halo movie help?

[elric bros]

what time will this movie take place in i mean is this before or after halo 3 i would love to know cuz i dnt like watchin movie
tht are sequals to things if i dnt know which episode there after

(if im not making sense im sry but im trying har to put it to words tht are understandable)

 

[Petey]

"After they crash-land on an artificial ring-world called "Halo", a navy captain, his surviving marines, and a chemically-and-surgically-enhanced supersoldier named John-117 "Master Chief" must find out what the Covenant, the genocidal alien race they are at war with, are looking for on the ring. However, Halo holds more secrets than either side imagined."


looks like the first one to me. This is the plot summary from imdb

 

[Dylan b]

apparently the movie will be released in 2009