Big Group was experiencing the most difficult period of his life.
Like most beasts of the Green Mist Sea, he was part of the unlucky bunch who were caught at the very heart of the ravaging Orca Revolution and was swept by the deadly storm that it brought.
When the Orca Revolution started, the Orcan higher-ups had specific plans in mind as they sent their batches of armies to invade the 3 Great Seas.
Regions like where Leroy established his previously thriving clan were part of the prime target regions included in the plans of the Orcan higher-ups.
This was the reason why after the Orca Revolution started, Leroy and his clan got no news of it as they were swept by it immediately after it started.
They were part of the very first unlucky beasts who encountered the unrestrained rampage of the Killer Whales.