Sunny's an alicorn now, living with a new unicorn roommate, and wondering why Izzy's so unique and why Izzy keeps saying weird things like, "I love you."
While Sunny and her friend's are cleaning up the lighthouse, they come across several pages of fiction Sunny wrote as a filly. As they bond over the stories, Pipp realizes that Sunny might be onto something that could make her a star.
Following the events of the film, Argyle Starshine shows up in Maretime Bay, surprsing Sunny and her friends. Izzy grows concerned when she notices something off about the stallion, and changes in Sunny's behaviour...
Izzy doesn't get why ponies don't want to be friends. Sunny doesn't get why the little purple unicorn makes her feel the way she does. Turns out there are a lot of things both of them just don't get.
Just after all the fuss of magic being back is sorted, Sunny returns home to the reminder that she has no home. This is not something her friends will let stand.