The Shannon River, Ireland’s most significant geographical feature and its longest river, serves as both a dividing line and a thoroughfare. It acts as a shimmering boundary, separating the rugged western landscapes from the more gentle eastern plains. As it flows southward, the Shannon traverses a diverse array of rural settings, where in its secluded backwaters, Ireland’s wildlife and flora flourish in a way that is rare elsewhere. Over the course of a year, wildlife cameraman Colin Stafford-Johnson immerses himself in the river’s environment, camping along its banks and navigating its numerous tributaries in a traditional canoe. He follows the river from sunrise to sunset through all four seasons, aiming to capture the Shannon’s natural history in a way that has never been seen, heard, or experienced before.