When a powerful evil threatens all of creation, heroes from across the multiverse must unite and fight.

A series of short, one-shot adventures written between arcs of the main SHONEN ALLIANCE story.

When a deadly new enemy sends Sonic the Hedgehog and his friends, rivals, and enemies to another dimension, Sonic will need help from a young Magical Girl named Madoka and her friends to save two dimensions from a malevolent Witch.