Quaestor Vexatius Sinustitis, 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.