Professional snowboarder Travis Rice and three friends set sail on a 2,500-nautical-mile journey through the Pacific Ocean from Tahiti to Hawaii. As they work their way up the Line Islands on their adventure north, they find new waves to surf, drink the sweetest coconut milk ever tasted and are drenched in a Doldrums rainstorm. The glittering, aquamarine waters are teeming with whales and fish. But they are teeming with something else, too. The crew collects water samples every 100 miles and finds even the most beautiful and remote seas of planet Earth are contaminated with microplastics.