The captains are challenged when a large group of boats shows up for the weekend. Hot Tuna must decide whether to risk leaving a familiar bluefin hot spot in order to climb the leaderboard. Meanwhile, FV-Tuna.com's and Pinwheel's determination to be No. 1 in a tight race to the top forces the fleet to prove they can steer in the right direction to catch bluefin and stand out from the crowd