After the shipwreck that killed all of his family, Kale floated inland to the Florida Keys
When he arrived on land it was a while before he was found, he miraculously got shelter from the palm trees on the beach. This is where he got his powers
The nice couple that took Kale in allowed him to grow up in a pretty normal childhood. That is until he turned 14 and started to realize he was different, he had powers of plants he loved to be in nature and was different from all the other kids
As Kale grew he learned to control his powers and he became more accepting of them but one thing he could never get over was the question, why he was different. He had known that he was adopted and decided to look into where he came from.
He found out that a week before he was found there had been a boat crash with researchers from Hawaii and only one man had survived. His name was Damian Jones he was now a wealthy plant researcher who had worked with Kale's parents.
After going to confront the man it turns out that Damian had no idea how Kale had survived and was shocked. He began to describe the night of the crash and things began to contradict what Kale found in his research.
Kale began pressuring him and Damian finally slipped up and had to confess to Kale. It turns out that just like Kale Damian had powers too and after finding out a great new discovery, he wanted all of the glory to himself. He caused a massive storm and caused to boat to crash