Twilight has theorized the possibility of creating pocket dimensions. Facing the ridicule of the theoretical magic community she has set forth to prove them wrong. She constructs a portal and enters it. Inside, she finds a field of empty white.
Rainbow Dash sets out to defeat the legendary witch Twilight Sparkle and collect the five hundred million bit bounty on her head. The one thing she wasn't counting on was Twilight being less evil than she expected.