The dreaded yet adored Holy Knights of Britannia utilize enormously strong magic to safeguard the land of Britannia and its kingdoms in a scenario comparable to the European Middle Ages. However, a tiny group of the Knights allegedly betrayed their motherland and turned their swords against their companions in an attempt to depose Liones' monarch. The Holy Knights destroyed them, but legends persisted that these fabled knights, known as the "Seven Deadly Sins," were still alive. Ten years later, the Holy Knights launched their own coup and became the new, dictatorial rulers of the Kingdom of Liones. Nanatsu no Taizai is based on the best-selling manga series of the same name and chronicles the adventures of Elizabeth, the third princess.