A top-tier fishing expert unexpectedly travels back in time to a barren primitive tribe. Terrified by rumors about the river, the tribe members dare not fish, while food grows scarce with winter approaching. Refusing to be intimidated by their fearful superstitions, he summons the courage to face the giant fish lurking beneath the water. Drawing on his professional fishing experience, he puts everyone's fears to rest. Taking the initiative, he leads the tribe in fishing for survival, using his fearless determination to shatter prejudice and his skills to help the tribe make it safely through the winter.