Swiss Chocolate Mouse

S1 E9: There has been a major bank heist in Zurich! Someone has made off with thousands of gold coins. Alexander wants to learn more, but it's time for the Swiss Chocolate Festival. Cousin Heidi, her friend Petra and the mice discover that a strange woman, Greta, is trying to buy up all the chocolate in town. But why? When the chocolate competition is sabotaged by a wild bunch of St. Bernards, Petra and the mice follow Greta and her clumsy sidekick Dag, to their mountain hideout. There they discover them making their own chocolates. After a wild bobsled race down the mountainside, Petra delivers the thieves and the chocolate to the judges who take a bite. The chocolate isn't just chocolate, it's chocolate covered gold coins! The thieves are arrested and Petra's parents win the chocolate competition. Later, Petra's parents make a fortune with their latest idea: gold foil-covered chocolate coins!