When the local library proves to be useless for the kids' class project, Marge tells Milhouse, Bart, and Lisa three Simpsons-style historical accounts: Henry VIII's (Homer's) attempts at siring a son, Lewis and Clark (Lenny and Carl) exploring the USA's wilderness with Sacagawea (Lisa), and Salieri (Lisa again) out to ruin piano-playing virtuoso Mozart (Bart).