Yuki is anything but social. Shy and completely inept when it comes to male or female relationships, he suddenly finds himself on a fishing trip with three other boys he barely knows. Each new friend has a strange quirk (like claiming to be an alien or talking with a turban-wearing duck), but while they fish, they're in another world. There are lots of different kinds of fish stories, from the “ones that got away” to the “best catches ever,” but whichever way the currents of life take them, for four young men, this trip may turn out to be the biggest whopper ever in Tsuritama!