Twilight, Sunset, and their friends are on vacation on a cruise ship again. But this is no ordinary vacation, Equestrian Magic is on the loose again! Twilight and Sunset were resting in their chairs when Sunset got turned into a five-year-old! Later, Twilight turned five too, on the beach! And right now, they're toddlers! Can the Main 5 and Spike save their friends in time? Or will they be toddlers forever?

The cover is drawn by Draymanor57.