Party in Pinkie Pie! According to Pinkie, there's always been a great party inside her, and that's why she's always ready to spread the joy all the time! ...Only lately, she hasn't felt quite like herself. She's been keeping a very important secret from all her friends -- especially Rainbow Dash! -- and though she's found ways to cope, they're starting to not work as well as they used to. And as she struggles with her unrequited crush, she can't help but worry if the party inside her is coming to an end...