Bobby Darin, a multi-genre sensation in the late 1950s and 1960s, scored hits "Mack the Knife," "Beyond the Sea," "Splish Splash," and "Dream Lover." The documentary explores his rise to fame, personal struggles, and relentless artistic ambition. It highlights Darin’s versatility across pop, jazz, rock, and country, showcasing his pursuit of musical depth. The film delves into his health battles and relationship with wife Sandra Dee, culminating in an understanding of his complex legacy.