Horrible Histories: The Movie - Rotten Romans (2019)

Teenager Atti finds himself conscripted into the Roman army after his cunning plan backfires on Emperor Nero. His new fate leads him to dreary Britain, a land teeming with rebellious locals. Struggling to adapt, Atti's situation deteriorates further when he is captured by Orla, a spirited Celt eager to establish her prowess as a warrior. As they navigate their opposing worlds, the two must confront their differences while dealing with the chaos surrounding them, highlighting the comical challenges of ancient life.