Rin is afraid of the dark, which isn't the best thing to be when you need to win your Dungeon Badge and the dungeon is full of monsters. Short of tokens, Rin finds herself desperate and spends her last tokens on a ‘glow-in-the-dark duck’. Although there is nothing luminous about her new friend, Doc, Rin enjoys his companionship and after a bit of training, the two friends tackle the dungeon and the monsters that lurk within…