In this delightfully offbeat biographical drama, Jack Black delivers a charismatic performance as Jan Lewan, the real-life Polish immigrant who became a polka music sensation and then orchestrated one of the most audacious Ponzi schemes in Pennsylvania history. Set in the 1990s, the film follows Jan's relentless ambition to achieve the American Dream, starting with his small polka band and expanding into a sprawling empire of music, merchandise, and dubious financial products. Driven by a desperate need to please his adoring fans, his skeptical wife Marla (Jenny Slate), and his demanding mother-in-law (Jacki Weaver), Jan weaves an increasingly tangled web of lies and promises. Directed by Maya Forbes and Wallace Wolodarsky, the movie balances sharp comedic tones with genuine dramatic tension as Jan's charm and optimism clash with the harsh realities of his fraudulent schemes. With a supporting cast that includes Vanessa Bayer, Jason Schwartzman, and J.B. Smoove, this vibrant, tragicomic tale explores how far one man will go to keep the music playing and his dream alive, even as the authorities begin to close in.