The Light, led by Daybreak, unexpectedly invaded the Realm of Night, the domain of the ancient god Sleep. Defying the onslaught were Sleep's Vessels, beings imbued with fragments of their master's power. iii the Dreamwalker and iv the Nightmareweaver, wield the abilities of Dreams and Nightmares, while ii commands the flow of Time within the Night. Vessel, their leader, embodies the shadows and darkness itself, manifesting their very essence. Together they defy the Light to preserve the Night.