After the events of Pitch Black, Riddick tries to return to the human race for the sake of Jack. They end up on Persephone, after parting from Imam, & board a Firefly called Serenity. A discrete ship, headed towards the outter rim, where they can disappear. Unfortunately others had a similar impression. They end up staying on the ship, as crew. (Andromeda Galaxy, Verse Cloud)
Riddick has been keeping a low profile on Triumph. No mercs, simple life, and he keeps his edge nice and sharp. The last thing he expected was a proposal. Or the lunatic crew that came along with his new bride. But when has his life ever been simple? At least his wife is able to keep up with him. Rated M for a reason folks.