In turn-of-the-century New York City, struggling young performer Harry Houdini is working for the renowned magician Kellar. One night his master's astonishing illusion the Floating Lady goes horribly wrong, with Kellar's levitating assistant apparently plunging to her death. Houdini, along with his wife Bess and brother Dash, must solve the mystery and figure out how the young lady died from drowning rather than a fatal fall.