Lelouch uses his godlike mind-control power to literally rewrite reality into an Alice in Wonderland fever dream, because his sister asked nicely. The entire thing is a slideshow that knows exactly how ridiculous that is. Every joke lands for people who lived with these characters for two seasons, and everyone else will watch twenty minutes of increasingly confident inside jokes and wonder what they're missing.
Lelouch's sister Nunnally has always dreamed of stepping into the world of Alice in Wonderland, so when the chance arrives, he seizes it. Using his powerful Geass ability, Lelouch warps reality itself to construct an elaborate wonderland tailored entirely for his beloved sister. What unfolds is a bizarre, comedic adventure as Nunnally navigates this surreal landscape with all the charm and wonder she could have imagined, complete with talking animals, impossible logic, and tea parties that defy the laws of physics. The catch: Lelouch's creation operates by its own absurd rules, and keeping this fantasy world stable requires constant attention. Between managing the chaos he's unleashed and watching Nunnally experience genuine joy, Lelouch discovers that even the most powerful abilities have their limits. The tone shifts between genuinely heartfelt moments between siblings and laugh-out-loud absurdity as the wonderland spirals into increasingly ridiculous situations. This is pure fan service for anyone who loves seeing powerful characters use their gifts in unexpected, tender ways, wrapped in the kind of unhinged comedy that only a Code Geass side story can deliver.