Geronimo\'s adventurous sister, Thea, narrates this fabulous Adventure that\'s packed with action, mystery, and friendship During a marine biology lesson at Mouseford Academy, the Thea Sisters learn about a mysterious shipwreck off Whale Island.
It\'s an Adventure these five world-traveling mice will never forget.
And just when they think their adventures are over, the Thea Sisters receive an invitation to travel to China to find another missing treasure.
When biology teacher Professor Van Kraken disappears, the Thea Sisters have to dive into the deep ocean to find him and the jewel.
According to legend, a very rare diamond called Jasmine\'s Heart was on the ship when it sank.
Geronimo\'s adventurous sister, Thea, narrates this fabulous Adventure that\'s packed with action, mystery, and friendship During a marine biology lesson at Mouseford Academy, the Thea Sisters learn about a mysterious shipwreck off Whale Island
