By the time the band quit touring in August of 1966, they had performed 166 concerts in 15 countries and 90 cities around the world. The cultural phenomenon their touring helped create, known as "Beatlemania," was something the world had never seen before and, arguably, hasn't since. The film shows the impact of those years on each of The Beatles - the toll that touring took on their relationships and the effect it had on their musical evolution, as well as the colossal boost the tours gave to their fame. But while the band created the spark, it was young people around the world who created the firestorm. The film also explore the incomparable electricity between performer and audience that turned the music into a movement.