Grandma takes Grandpa and the twins to Japan where they must track down the armor of the Four Samurai in order to defeat The Dragon.
The Purple Rocket PodcastGrandpa's Globe Episode 19: Japan and the Four SamuraiThe-Purple-Rocket-Podcast-Grandpas-Globe-Episode-19-Japan-and-the-Four-Samuraikey_live_lptrw06RFF8SZac9b3YjUhilAylVKviZ