The friends were amazed by the treasure they had found. They couldn't believe their luck and were already planning all the things they could do with their share of the treasure.

But just as they were about to leave the abandoned house, Lily noticed something strange about the map they had found. There were markings on the edges that seemed to lead to another location.

"Guys, look at this," she said, pointing to the map.

"What is it?" asked Ben.

"I think this map leads to another hidden treasure," replied Lily.

The friends were excited at the thought of another adventure and quickly made their way to the location marked on the map. It was a long journey, but they were determined to find the treasure.

After hours of walking, they finally reached a cave hidden deep in the mountains. Inside, they found a locked chest with a note attached to it.

"Only those who are brave and true can open this chest," read Ava.

The friends looked at each other, knowing that they were all brave and true. They worked together to figure out the lock combination and finally, the chest opened with a click.

Inside, they found a beautiful crystal key and a note that read, "This key will unlock the greatest treasure of all."

Excited and curious, the friends followed the directions on the note and made their way to the town's museum. There, they found a locked door with a symbol that matched the one on the book they had found in Lily's attic.

Using the crystal key, they unlocked the door and were amazed by what they found inside. It was a room filled with ancient artifacts and a book that held the secrets of the town's history.

The friends were in awe and realized that they had not only found a treasure, but they had also uncovered the town's hidden past. From that day on, they were known as the brave and clever group who not only solved the mystery of the secret code, but also unlocked the greatest treasure of all - knowledge.

The end.