Feudin', fightin' and a-fussin' -- that's the story of hip-hop, where live performance competitions ultimately lead to real battles and fatalities. War on Wax tracks some of the legendary early rivalries (One vs. MC Shan and Kool Moe Dee vs. LL Cool J), which led to the vaunted East Coast-West Coast dissing match and the deaths of Notorious B.I.G. and Tupac Shakur. Get the scoop behind the screaming headlines and find out what really went down.