Danger all Round

When Dudley Dylan's people are kidnapped from a ship cruising the Adriatic, Dudley persuades his friends to go to try and rescue them. Riding motorcycles across Europe and deep into Russia, with the help of the Russian police. Can Dudley reach his people before the criminal mastermind feeds them to the bears? Do Dudley and his friends know what they are riding into? Do they know that they will face danger with every step?