The friends were ecstatic as they returned home with the treasure. They couldn't wait to show their families and friends what they had found. But as they were celebrating, they noticed that the strange man, Captain Blackbeard, was nowhere to be found.

They started to wonder if he had tricked them and taken the treasure for himself. But then they remembered his promise to let them keep a portion of the treasure. Maybe he had just left to give them some privacy.

But as the days went by and they didn't hear from Captain Blackbeard, the friends began to worry. They decided to go back to the museum and ask the judge if he had seen or heard from the pirate.

To their surprise, the judge informed them that Captain Blackbeard had been arrested for trying to steal the replica treasure from the museum. He had been watching the friends and had seen them return the treasure, but he couldn't resist the temptation to try and take it for himself.

The friends were shocked and disappointed. They had trusted Captain Blackbeard and had even gone on a treasure hunt with him. But they also felt relieved that the real treasure was safe and back where it belonged.

As they were leaving the museum, the judge stopped them and handed them a letter. It was from Captain Blackbeard, apologizing for his actions and thanking them for showing him the error of his ways. He also included a map to another treasure that he had hidden on the island.

The friends were hesitant at first, but they couldn't resist the temptation of another treasure hunt. They decided to go and see what Captain Blackbeard had left for them.

With their newfound knowledge and skills, the friends were able to find the hidden treasure. And this time, they made sure to turn it over to the authorities and donate it to the museum.

As they walked away from the island, the friends couldn't help but feel proud of themselves. They had not only found the lost treasure of Pirate Island, but they had also helped to bring a notorious pirate to justice. And they knew that their friendship and adventures would continue for years to come. The end.