Thomas has been a professional drummer all through his life until he got asked to revive Harry Partch’s lifework. In his tiny garage in Cologne, he starts reconstructing all of Partch’s 75 custom-made instruments. He has only two years to get everything ready for the grand premiere at the National Theater in Taiwan. 75/1 observes the abysses of a man, who between insomnia and isolation, has only one determination to finish the work he had started.