A starry-eyed Sabrina hates to leave Harvey for a family skiing trip to Mars, but Doug, the good-looking and magically talented ski coach she meets there, soon has her forgetting to phone home while they spend a romantic evening together. Meanwhile, Hilda meets a man who claims to be a secret agent on a dangerous mission, which she assumes is just another holiday-on-Mars fib; and Salem takes the opportunity to host a riotous cat party at home.