Tezuka, poet Kodama Tanima, and reporter Rock visit Fossil Island, tended to by Gansaku, the elderly owner of the only inn on the island. On the night of their stay, they are visited by curious and fantastical dreams of all sorts relating to the rocks on the island. What worlds will these dreams bring them to?

Also includes two shojo one-shots:

• Robin-chan (ロビンちゃん): Ruri is a girl who resides with a baron, longing for the return of her missing brother. One day, a young man named Robin comes by ship to the baron's mansion. This young man could very well be the key to finding her brother...
• The Maidens of Tatsugafuchi (龍が淵の乙女, Tatsugafuchi no Otome): The tale of two sisters who disguise themselves as samurai in their search for the Munen no Tama, the crest of their family.