A feature-length animation of the popular work "Niko Niko, Pun", which began broadcasting in the 1980s as a corner of NHK's educational program "Okaasan to Issho". The original "Niko Niko, Pun" was a live-action puppet show in costume, but in this anime version, the three main characters are voiced by the same voice actors, including Kaneta Kimotsuki. One day, Porori hears from her mother that she has a new baby brother. With the help of Jajamaru and Pikkoro, they set off on a boat to find their brother, but for some reason, the three of them end up on an island inhabited by pirates.
肝付 兼太
as Jajamaru
よこざわけい子
as Pikkoro
中尾隆聖
as Porori
高木均
as Grandpa Oak Tree
山田康雄
as Kitan
玄田哲章
as Goronza
松岡洋子
as Medaruma
田中真弓
as Pepera
浅井淑子
as Porori's Mother
Yuriko Kaneko
as Whale
Do!
as Flower Girls
