Hellbangers captures the vibrant heavy metal community in Botswana, Africa, through the lens of photographer Pep Bonet. The book focuses on Overthrust, a heavy metal band, and provides a glimpse into the growing heavy metal scene in the region.

Over the past decade, the heavy metal community in Botswana has expanded, with more than ten bands emerging and gaining popularity. The residents of Botswana portrayed in the book express their rebellious spirit and use heavy metal music as a means of critiquing society. The DIY ingenuity of their costumes, which often involve harvested animal skulls and natural elements, adds a distinctive touch to their identity.