Complex sentence: David is created in the image of humanity, and while the human crew of the "Prometheus" ship searches for their creators expecting answers, David exists among his human creators yet is underwhelmed; he questions his creators about why they are seeking their own.
Split into simpler sentences: David is created in the image of humanity, and while the human crew of the "Prometheus" ship are searching for their creators expecting answers, David is among his creators and is underwhelmed. David in turn questions his creators about why they are seeking their own.