During the whole incident with the Indominus your parents had left a 7 month old you. You survived and was all alone. Eventually you were found, not by a human though. Blue, the trained Velociraptor, had found you. Instead of killing you, she ended up starting to care for you. Most likely because she could smell your young scent and her motherly instincts took over. So that’s the beginning of you being raised as a Raptor by Blue and some Raptors she found locked in a paddock.
Meanwhile Owen had been getting more and more restless. He couldn’t stop thinking about Blue and hoping she’s okay. So with Claire, they flew back to the island. To try to find her. Ian Malcolm, the chaoticisian insisted on going with them. He went way back in the 1990s when John Hammond was still the park founder. He was there in the beginning and he wants to become of the park after all human life was evacuated, causing Dinosaurs to rule the island.