Kerokero Keroppi no Soratobu Yume no Fune
Japanese title: けろけろけろっぴの空とぶゆめの船
Type: OVA
Episodes: 1
Source: Unknown
Genres: Fantasy
Producers: Sanrio
Duration: 30 min
Rating: G - All Ages

Keroppi and friends get special tickets to ride a flying ship at night to look at the constellations. Whether they dreamt the same dream or encountered it for real is up interpretation.