The Kids are enjoying a picnic when Mr. Socrates calls them on a special mission: they are to pick up a special parrot that used to belong to a deceased scientist and deliver it to Switzerland. The parrot has memorized half of a secret formula, his twin brother has the other half and the parrots must be reunited in order to deliver the entire thing. When they arrive in Switzerland an enemy scientist's assistants switch the parrot on Wally and give him a sickly looking cuckoo bird. But without his brother the parrot cannot give the scientist the formula, so he has his assistants follow the Kids and get him. The Kids to go their contact and pick up the other parrot and hide them in their cabin, intending to switch it for the cuckoo bird when the assistants come. When the assistants pick up the cuckoo bird, the Kids chase him on skis. Wally falls behind due to his inability to ski, and Steffy and Merilee crash into each other. (thetvdb.com)