Tom cruis and terry crews are competing captains of two different cruise ships.
They have a an ongoing sordid rivalry of one upsmanship. Trying to prove who is the better captain of the better ship.
Coincidentally both ships have been chartered for the same path around Madagascar at the same time.
Hijinks ensue as the two cruise liners begin the journey - often so close together they can shout at one another deck to deck.
Things begin to escalate as hijinks become attempts at sabotage. Things continue to devolve into near warfare as passengers are injured and property damaged.
In order to better fight one another the captains of either ship convince hundreds of passengers to take up arms to board the others ship.
Cruise has his crew and Crews has his.
Just as terry crews boards cruises ship Somali pirates appear in a third boat. The pirate captains name is Cruze. Pointing guns and making demands, the pirates rob the cashboxes of either cruise-ship. Cruze laughs as he sails away with the money.
Now Cruise and Crews along with their rabidly loyal passenger crews must band together to hunt down Cruze to get everyone's crap back.