From the introduction:
A One-Round All-Ranks EXCLUSIVE Adventure for Heroes of Rokugan (Champions of the Sapphire Throne)
The Emperor’s twin sons are dead. The PCs have witnessed those deaths in person, and as a result, they will be invited to accompany the Emperor and his late sons back to the Imperial Capital for their funeral. During this journey, the PCs will have the opportunity for private conversation with the Son of Heaven – a rare and special privilege. They will also have the chance to deal with a threat to the Emperor’s most trusted advisor, the Imperial Herald, Miya Shikan.