After the Friendship Games debacle, the Shadowbolts and their classmates go to Eternal City for the traditional second-to-last year's overseas school trip. However, the circumstances will make this trip far from traditional...
Abacus Cinch tried to get Twilight to unleash the stolen magic at the Friendship Games. Unfortunately, her plan went horribly wrong, and now she, her students, and her opponents have been regressed to children, toddlers, and babies.
Blueblood has been defeated, and Appiano has been elected as the head of the Student's Council, while Vice Principal Luna's unusual afternoon activity has been restored. However, not everything has been smoothed out just yet.
After begin kicked out of her home, Twilight Velvet and Pinkie Pie decide to sadisfy their obsession for regression by running an Adult Daycare Center. Also, Silver and Sweetie happen to be now in good terms.
Under the suggestion of two members of the hospital staff, Nurse Redheart and Nurse Coldheart start to use an unconventional method for save time during the shifts.