Lucy and Sparkle are excited to carve their Halloween pumpkins, but things suddenly take a spooky turn.

"Magical Sparkle Lake is starting to freeze, and Unicorn Academy might have to close. Can ten-year-old Scarlett and her unicorn Blaze find out who's freezing the lake and save the school?"--

"After ten-year-old Sophia meets her unicorn, Rainbow, at Lakeside Unicorn Academy, they're away on their first amazing adventure--they must discover who is tampering with the lake that gives unicorns their magic!"--

Isabel is having trouble getting along with other students, her teacher, and even her unicorn, Cloud, but another threat to Unicorn Academy brings them back together.

The Princess in Black and her faithful pony Blacky are called upon to rescue Duff and his goats from an invasion of cute, seemingly harmless bunnies from Monster Land.

"See?" cries the calf. "Uni means one, and corn means horn!" Even their baby picture proves it: they were born with one horn! But as the eager little calf continues their research, a budding identity crisis arises when they realize they don't quite check all the boxes--should a certain lack of moonlight sparkle or silky mane or rainbow poop decide the issue. Perhaps some unexpected encouragement from a pack of "real" unicorns might be just the assurance...