It's summer vacation in Penguin Village, and a very pretty vampire pays them a visit! (Source: BakaBT)

Arale and company arrive at a nice location for a picnic. They soon discover a beautiful stone with strange powers. Before they know it, a dangerous pirate and his mysterious ship invades their peace and steals the stone. Now it is up to them to retrieve the stone before it is used by evil hands. (Source: BakaBT)

The story centers around an evil counterpart of Arale created by Dr. Mashirito named Abale.

A special two-part episode that aired between episodes 24 and 25 of Dr. Slump: Arale-chan.