The anime personifies the Hacka Doll app's customization engine as three "Hacka Dolls" — the personal entertainment AI and main navigator Hacka Doll #1, the anime expert Hacka Doll #2, and the knowledgeable otaku Hacka Doll #3. (Source: Anime News Network)
Hacka Doll 1-gou
Hacka Doll 2-gou
Hacka Doll 3-gou
The ditzy Hackadolls #1, #2, and #3 make their debut as official Personal Entertainment AI. However, since these girls are so unbelievably ditzy, they use their own physical presences to take on human job requests.
A producer of an idol agency takes on too many gigs at once. So the Hackadolls decide to advance his career by making their debut as idols on an underground stage.
A company's fate lies in the hands of a huge project. However, with insufficient funding and an increase in bugs, this new operating system's launch date seems hopeless. If this project fails, the company tanks. Then, the Hackadolls are inputted into the system...
#2 takes on the advancement of a client suffering from the big V. She ends up feeling something similar to excitement over this desperate, yet pure virgin. With a sunset and a moody atmosphere, the couple's feelings advance to the next level…
Unlike the one-dimensional, non-progressing Hackadolls, Hackadoll #4 is finally rolled out. Now overly specific #4 begins to bolster up the ditzy Hackadolls?!
There's an outbreak of some serious bugs in cyberspace, sending the Hackadolls into a tizzy. Their hands, feet, and entire bodies are damaged until they lose something very important. Meanwhile, they receive their summoning call. The comparatively sane #3 heads out to advance the client...
The Hackadolls get mixed up with a hard-as-nails production assistant and wind up advancing an anime. But, when faced with the gap between fantasy and reality, the girls are crushed. They shall continue to work like dogs until KUROBAKO's White Box is complete.
The Hackadolls act as tour guides for a "foreign girl" who doesn't speak their language. With strange gestures, the Hackadolls take her to the best spots. But there seems to be one place in particular this girl must go to…
In order to rescue someone who got lost in an internet game, the Hackadolls input themselves into the world of the game. They adventure through vast fields, meet friends, learn of family love, and send one man back to reality.
The Hackadolls go to a mountain hot springs resort to relax both their minds and bodies. However, the resort receives an inauspicious notice, taking things in the wrong direction...
The Hackadolls research the perfect present for a fan to give his favorite VA at her birthday event. When the special day arrives, the Hackadoll's client decides to personally deliver the painstakingly acquired present...
It's a pleasant Sunday morning. The Hackadolls are summoned to help out the ever iconic "magical girls" kids love so much, but the magical girls and monsters in this town are not what you'd expect. The Hackadolls face what might be their hardest challenge yet.
The Hackadolls return to Ayame (their subject from episode 1) to see how she's enjoying life as a born-again otaku. But Ayame's friend's upcoming marriage is making her rethink over her life's choices...