When Meliodas and his rambunctious gang, known as the Seven Deadly Sins, save Elizabeth Liones from an unwanted marriage, the situation is far from well. Elizabeth falls under a spell of dark magic that puts her under a 70-year sleep, and in that period of time, the kingdom of Liones is once again on the brisk of danger and risk.

When Elizabeth wakes up, however, the horror is real: she has lost all her memories, and has no idea of her true identity. Yet, all that she remembers when she is awaken from her deep slumber is three words:

Live for me.

Elizabeth once more embarks on a perilous journey, her mission to seek the infamous Seven Deadly Sins to stop the reborn Holy Knights. Nevertheless, she is about to be faced with one of life's greatest challenges: the desire between her love for the country, or the love for a certain blonde captain.