Kerokero Keroppi no Bokutachi no Takaramono

Keroppi discovers a beautiful sparkling stone, and a run of good luck soon convinces him and his friends that they have found a special treasure. As each of them gets a turn with the stone, excitement slowly gives way to possessiveness.

The more they depend on the supposed lucky charm, the more greed begins to spoil their friendship. What looked valuable because it glittered forces Keroppi and the others to reconsider what their real treasure has been all along.