"When new twins are born in a village in the Pacific Northwest, everyone celebrates. The birth of twins is a rare and special occasion; they are children of the salmon. But as the twins grow, they become selfish and greedy, which is not the way of their people. When Thunderbird sees the twins fighting and arguing, he is not happy, and he transforms them into a Two-Headed Sea Serpent. Deep in the ocean, the twins discover that the salmon are being kept from going up the river. When they realize their people will starve without their help, the twins must learn to work together as one .... Only if they learn to share will the twins regain their human forms."