The twins Ben and Zoe are sent to an Alaskan village in the far north to investigate the death of a mother polar bear and find and rescue her two orphaned cubs.
When a captive-bred dolphin is dumped in the Caribbean, the twins, Ben and Zoe, set out to locate and guide him to safety--but when a storm overturns their boat they find that the tables have turned.
A snow leopard and her cubs have been separated from their territory by an avalanche in the Himalaya Mountains, and it is up to Ben and Zoe to find the rare cats and guide them to safety before the local villagers poison them.
Sam Silver, a boy sent back in time by a magic gold doubloon, must lead the pirates of the "Sea Wolf" to buried treasure in order to stay on the ship--if not, he must walk the plank.
When a new pirate joins the crew of the "Sea Wolf," Sam instantly becomes suspicious, and before long he is convinced that he and his friends are headed into a trap.
