Parting the Clouds is an Animorphs AU in which Cassie is recast as a rationalist. It is inspired by works such as Luminosity and Harry Potter and the Methods of Rationality.

In this installment, five ordinary American teenagers take a shortcut through a construction site on their way home from the mall, looking for an easy way home. What they find is a wounded alien who, in his desperation, gives them a gift and a warning. The gift -- to become any animal they touch. The warning -- that their planet is under attack. And they, five untrained kids, are the only people in a position to protect it.

Help will come -- eventually. But until then, it's up to the Animorphs, and they'd better come to grips with aliens in general, their new enemy in particular, and their new morphing powers fast. The freedom of the world is at stake.