Some scholars trace the origins of ‘mumming’ to the Saturnalias of ancient Rome, but the noisy, mid-winter costumed revelry re-enacted in different parts of the world today may go back even further, to the ancient Greeks or Egyptians. In the Pernik region of Bulgaria, the local version of the mummers parade known as ‘Surova’ was inscribed in the UNESCO List of Intangible Cultural Heritage in 2015. This colorful documentary takes us through the streets of Rasnik, where children dress up as ‘kukeri’ with masks and bells that have been handed down from generation to generation. The film also lets us in on the psychology that lies behind the Surova ritual.