Out at sea fishing, Asterix and Obelix are blown off course in a storm. Luckily they land on the shores of a Roman colony - or is it? Teepees, totems, gobbling birds: it's not what they're used to. And what are the Viking explorers in their longship doing? But perhaps 50 BC is a little too early for a voyage of discovery to this strange New World...
One dark and stormy night, a sinister figure arrives in the little Gaulish village. Prolix, who claims to be a soothsayer, prophesies that when the storm is over the weather will improve. And it does! Now the credulous villagers believe every word he says, but Asterix has his suspicions of the smooth-talking Prolix. Who is really right about the soothsayer?
Julius Caesar sends Caius Preposterus, a bright young graduate of the Latin School of Economics, to corrupt the indomitable Gauls by introducing them to big business. Obelix's menhir trade is soon thriving, backed by a heavy advertising campaign - but does wealth bring happiness? And what will happen when the bottom falls out of the menhir market?
Quaestor Vexatius Sinusitus, who is about to expose the Roman governor's creative accountancy, has been poisoned. Can Getafix brew an antidote? Only if Asterix and Obelix find a certain flower for the druid's potion in Helvetia. What with bank safes, cuckoo hourglasses, yodelling and holes in the cheese, they're soon on a real Helvetian roll.