In Part 4, "The Guardians' Legacy," Oliver and Captain James, armed with the wisdom of Atlantis and guided by the Amulet of Eternal Wisdom, set out to right the wrongs plaguing various lands. They lift a kingdom from endless night, restoring its light and hope. Their journey of healing and unity forms the backbone of the guardians' legacy, as they become beacons of change across the world. However, a new adversary, the Dark Master, emerges, coveting the Atlantean wisdom for malevolent purposes. The adventure intensifies as our heroes prepare to defend the ancient knowledge, with the amulet now serving as their shield against the gathering darkness. The story hints at an impending confrontation, promising a rich continuation of the saga.