Three friends explore an abandoned mansion, find a safe, and encounter a plastic skeleton. They are teased at school and see a real skeleton in the forest.
A family goes on vacation and visits a castle. They discover legends and secrets about the castle, including a hidden treasure. They embark on an adventure to find the treasure.
Matteo, a shy and studious boy from Italy, becomes pen pals with Clara from Portugal. They develop a strong friendship but face challenges when they meet in Australia. Eventually, they become best friends and travel together in Italy and Portugal.