Consisting of four short stories, this OVA was the first attempt at an animation adaption of the manga and storybook series.
Snoozer (Neteru-kun) has always been known in the main anime series as always sleeping, and occasionally 'waking up' to provide practical advice to the Ham-Hams when needed. In this OVA, he is seen hopping up and down in his sock to move around.
Several of the hamsters look different from the ones in the main anime series due to wearing clothes or lacking articles:
- Sandy (Torahamu-chan) doesn't have her tail-ribbon and instead wears green pants.
- Dexter (Megane-kun) simply doesn't have his bowtie.
- Howdy's (Meido-kun's) apron is indigo instead of red.
- Maxwell (Noppo-kun) is wearing a blue, full-body jumpsuit.
- Cappy's (Kaburu-kun's) hat is blue instead of green.
- Hamtaro wears a bright red sweater and is little bit skinnier whenever he's not with Natsumi.
It is possible Penelope was intended to be male in this adaption, due to being referred to as Chibimaru-kun instead of -chan. In this OVA, Chibimaru-kun's yellow blanket is shorter than the blanket worn by Penelope in the main anime series.
Hamtaro's owner Natsumi would be replaced with the more popular Hiroko Haruna in the following anime series Hamtaro (2000). She would later be better known as Laura Haruna in the English version of that series.