Gallagher chronicles the fall and rise again of one of the world's biggest bands: Oasis. With a focus on Noel Gallagher and Liam Gallagher's individual journeys, this absorbing biography starts from the shattered remnants of Oasis in 2009, taking fans through 15 years of high and lows as the brothers become formidable solo artists, pinpointing the significant events that allowed them to bridge their fraternal rift and stage the greatest comeback of all time.

Inside, PJ Harrison, a former label owner and artist manager (but above all Oasis fan) who spent time on the road and in the studio with the band, takes fans on a filmic journey to the heart of Oasis and everything they stand for. Through meticulous research, exclusive interviews and inside access, Harrison strives to understand how two brothers rose from a council estate in Manchester to create the dominant musical force of their generation throughout the 1990s and 2000s and why they have such enduring legacies both together and apart.

With a foreword from legendary Rolling Stones manager and producer, Andrew Loog Oldham, this unique telling of the Oasis story allows fans new and old to draw their own comparisons between two very different brother; casting a new light on how they navigated fame, feuds and family to create music history before shocking the world with the reunion nobody thought could happen.