Karo runs away from home because her quarreling parents want to divorce. She travels with her circus friends Victor and Tonie of Circus Noël, who can participate unexpectedly in Cultura Nova, an important circus festival.

Small, travelling family circus Noel is performing poorly since Diony, one of the mounted brothers whose 'Horse Boys' act was their greatest asset, left. For lack of a proper staff, illegal Brazilian immigrant Victor, who can't fit in the European school system, and his mother can join, as well as Karo, who ran away from home, unable to stand her parents quarreling over divorce. The circus hopes to survive by staging a festival starring a new version of the Horse Boys, but the remaining artists can't get it right. So Victor and friends decide the last hope is finding and bringing back Diony.—KGF Vissers