Smart, driven Alice has every last detail of her birthday party planned out -- until a fun-loving unicorn shows up and proclaims himself her new best friend.

Alice is determined to use her class field trip to the aquarium to join the Guppy Guides, but Unicorn's quest to meet a real mermaid put a damper on her chances.

When Alice's prized Inspector Brioche action figure mysteriously goes missing, she and Unicorn must take up their own investigation in order to solve the case.

When Unicorn "goes away" for the weekend, Alice savors the alone time - until she sees Unicorn having a blast with Pixie - and wonders if she's lost her best friend forever.

When Unicorn brags to Alice about how easy it is to babysit, Alice decides to turn the tables on him - by becoming a big baby.