Sean Bean returns as British soldier-hero Richard Sharpe, a rough diamond who has risen through the ranks of the army on the back of his brave exploits. Set during the Napoleonic Wars, "Sharpe" is based on the popular novels of Bernard Cornwall. A year after the battle of Waterloo, dispatches from India warn that a local Maharaja is threatening British interests. Sharpe is sent to what turns out to be his most dangerous mission to date in "Sharpe's Challenge."