The rest of the book is then a flashback of Elfangor's personal history, beginning with him as an Aristh, a warrior in training, and ending with him at the construction site.
Elfangor and his fellow aristh Arbron rescued two humans from the Skrit Na: Loren and Hedrick Chapman.
They were forced to use the Time Matrix to escape, which took them to a fragmented universe created from Elfangor, Loren, and the Yeerk (now Visser Thirty-Two)'s memories.
He married Loren some time later, but just before she gave birth to Tobias, the Ellimist repaired Elfangor's "timeline" and returned him to the Andalite homeworld.
She later takes over the body of Marco's mother, Eva, and fakes her own death to fulfil her duties as the lead Visser.
As an unidentified Animorph (who in the final book is revealed to be Rachel) lies on the brink of death, the Ellimist appears and recounts his origins as Azure Level, Seven Spar, Extension Two, Down-Messenger, Forty-One (Toomin) the Ketran and his transfiguration into the Ellimist as a final request to the dying Animorph.
By living on the planet as an Andalite, the Ellimist learned that the key of survival was to create as many offspring as possible; although some may die, with repeated efforts life could multiply faster than the Crayak could wipe them out.
To prevent such catastrophic damage, the Crayak and the Ellimist agree to construct the intricate "game" they are seen to play in the Animorphs series.