The album follows the band’s intoxicating self-titled debut, which the Associated Press described as "pretty much perfect". Drenge are Rory and Eoin Loveless, two brothers who wrote and recorded Undertow on tour last year, and between their hometown of Castleton and Sheffield, where the band now live. Undertow was produced by Ross Orton and, for the first time, features a third member, Rob Graham, playing bass on three songs; Graham also joins the band for live shows. The NME Award winners for Best New Band made their US TV debut in January 2015, performing the lead single “We Can Do What We Want” live on The Late Show with David Letterman.