The story centers on your prototypical gumshoe type who is investigating the black market for something just a little more valuable than pirated DVDs. In this future, for a price, you can buy yourself immortality. Justin Bondi and Andrew Ludington wrote the screenplay, but it has undergone some rewrites. The most recent draft was written by Wiseman and Chris Morgan.
Wiseman says that he considers Shell to be a passion project and told Variety, "I've been wanting to make this film for the past five years, but it's a huge film and has always been too expensive to make at the level I've wanted to make it at, now I'm finally getting a chance to do it at that level." I guess that means we can count on the film having some expensive special effects.
Also, even though he won't be directing it, Wiseman is still planning to produce the third installment of the Underworld franchise. But it looks like most of his attention is going to be placed firmly on Shell Game instead. Judging by the reaction to his last Underworld flick, I'd say it was probably a good call.