It's week four of the North Atlantic bluefin tuna season and Captain Paul Hebert fights for his first tuna of the season. After days of nothing to show but pulled hooks and sharks, tension mounts on the Kelly Ann. Captain Greg Chorebanian and first mate Greg Gibbs of the harpoon boat Kristiana steam into Gloucester on a mission: to kick rival Captain Hollywood's butt. But they're at a disadvantage without a pilot to guide them to the tuna like Hollywood has. Yet, Hollywood's pilot, Mark Brochu, can't help him throw the harpoon and land a fish.

It's week six, and Pin Wheel has a narrow lead over last season's champion fishing vessel Tuna.com, while Hot Tuna, Hard Merchandise and Kelly Ann are lagging behind. Now, Captain Paul Cheney and his crew are about to enter the scene and shake things up, with the smallest boat in the fleet — the fishing vessel Drama. They have a lot of catching up to do, with six weeks of the fishing season gone and no tuna. Meanwhile, the crew of the FV-Tuna.com will have to start their trip without a captain, and Dave Marciano gets frustrated as Hard Merchandise keeps hooking and losing bluefin. With each vessel struggling to put meat on the deck, anyone could end up on top this week.