A pair of fans of the heavy metal band Iron Maiden launch a crowdfunding campaign to help Paul Di'Anno (aka The Beast), the band's iconic original singer (on the band's first two albums, "Iron Maiden" and "Killers"), get back on his feet literally, emotionally and professionally. Neglected by healthcare workers in the U.K., wheelchair-bound Di'Anno leaves his home in the middle of the pandemic and travels to Croatia, where he rides an emotional rollercoaster, running out of money, reuniting with his former Maiden bandmates and falling in love - all while his health makes a dramatic turn-around thanks to the goodwill of fans, doctors and nurses. Di'Anno makes a heroic, risky and drama-filled return to the stage as Metallica's James Hetfield and Gene Simmons of Kiss, as well as members of Slayer and Megadeth make appearances and testify to Di'Anno's importance and lasting impact.