If you are more specific about exactly what you're trying to accomplish, we can more likely help you to figure out how to accomplish it with the effects that come with After Effects.
Take a look at the Reshape effect in Todd's list. There's a tutorial linked in the info that shows how to use reshape to morph one face into another.
I'm looking for a plugin to do something similar to platograph pro or magic morph?
Is there an after effects of equivalent of these stand alone apps?