Hupo and the wonder thief

Hupo and the Aletha love to amble through the bustling streets of their city, talking to shopkeepers and recounting tales of their favourite adventurer, the Great Humdingo - much to the annoyance of everyone around them. But when mysterious, zombifying mists creep into town and the Aletha is captured by a sinister force in the mountains, Hupo's on a mission to set everything to rights. But can he hold onto who he is when everything around him seems so terrible?