Climb Mount Fuji.

Karl’s last “thing to do” is seeing Japan’s most spiritual destination: Mount Fuji. On arrival in Japan Karl gets lost in Tokyo. Ricky and Steve put him up in a ‘capsule’ hotel, send him to a Sumo wrestling stable, arrange for Karl to meet a Zen Master and send him on the world’s steepest rollercoaster. And he has to attempt to climb Mount Fuji.