Based on the popular manga and anime series The Seven Deadly Sins, The Seven Deadly Sins: Knights of Britannia is the first console video game adaptation of the franchise that brings together its characters for an action-packed adventure.

In the realm of Britannia, young princess Elizabeth embarks on a journey to search for the legendary order of knights, the Seven Deadly Sins, to free her kingdom from corrupt knights. Upon finding the Sins' captain, the seemingly young Meliodas, they journey across the land to reunite the Sins and save the kingdom.