When they were accused of wanting to overthrow the monarchy, the feared warriors known as the Seven Deadly Sins were sent into exile. Princess Elizabeth discovers the truth – the Sins were wrongfully accused by the royal guard, the Holy Knights – too late to prevent them from murdering her father and seizing the throne! Now the princess is on the run, seeking the Sins to help her reclaim the kingdom. However, the first Sin she encounters, Meliodas, is a small innkeeper with a talking pig. He doesn't even have a proper sword! Were the legends about the strength of the Sins exaggerated?.