Jeremy is on a quest to Africa's Rift Valley to explore the roots of fishing and the monsters these first fishermen faced. A dangerous place, with killer crocs, hippos and warring gangs, but at its heart lurks a worthy prize: the Mputa, a.k.a. Nile perch.Jeremy is on a quest to Africa's Rift Valley to explore the roots of fishing and the monsters these first fishermen faced. A dangerous place, with killer crocs, hippos and warring gangs, but at its heart lurks a worthy prize: the Mputa, a.k.a. Nile perch.