During the reign of Catherine the Great, the young Grinev sets out for his new career in the army and en route performs an act of kindness by giving his warm coat to a man freezing in a blizzard. This action reaps its reward when he subsequently finds himself caught up in the rebellion headed by the infamous, and strangely familiar, Pugachev. Rivalry with a fellow officer for the affections of Captain Mironov's daughter further complicates Grinev's affairs, and ultimately it is only an appeal by Masha Mironova, the eponymous captain's daughter, to the Empress herself that can unravel a tangled web.