The lonely genius - for hardly any architect of modern times does this term apply less than to Le Corbusier, one of the most radical and controversial representatives of his art. Early on, the charismatic "Corbu" attracted young architects from around the world, who passionately sketched in his studio, secured him new commissions during lean times, and managed his legacy after his death. Who were the collaborators, where did they come from? What did they do for him and his work? Were they able to break free from his influence, and did they themselves become significant architects? From the multitude of associates, Ursula Muscheler highlights the most important ones - including Oscar Niemeyer, Albert Frey, and José Luis Sert - and traces their life stories alongside that of Le Corbusier. An impressive kaleidoscope of 20th-century architectural history.