The pattern of quakes suggests that the worst Heterodyne yet is about to appear, but when it shows up five thousand metres above Shinjuku and does nothing, no one is quite sure what to make of it. As the team begins helping with the evacuation of the city, the army makes it clear that they aren't about to sit around- but will their interference do more harm than good?
A day with zero probability of a Heterodyne appearance gives the team the perfect opportunity to pursue other interests and tie up a few loose ends. Whilst Ibuki and Aoyama visit their parents, poor Akagi is nominated to make a speech at the spring hiring ceremony. Meanwhile, Irie and Nakahara decide to interview their co-workers in an attempt to create a film about the heart and soul of the Dai-Guard team.
As if learning that her father was not the hero she always believed him to be wasn't bad enough, Ibuki's will and nerve became completely shattered when she had to fight against a Heterodyne almost identical to the one that killed him. Now, as Ibuki takes a vacation whilst she decides whether or not to pilot Dai-Guard ever again, the team must put up with Matsutouya, her manual-obsessed replacement.
PR Division 2 is to be dissolved in favour of a new Dai-Guard Enterprise Unit, complete with new Dai-Guard pilots and Saeki as tactical advisor.
A new year has brought big changes for the company, with Director Nishijima stepping up to take over as company president following his orchestration of Ookouchi's dismissal. In the wake of this development, PR Division 2 receives a new tactical aide- Saeki, a former student of Shirota.
It's Episode 14, and in good anime tradition, that means it's time for a clip show. Chief Oosugi prepares a report on Dai-Guard, including details on all the team and their exploits to date.
With Kokubogar needing serious repairs, Shirota resumes his previous assignment as Dai-Guard's tactical advisor…although not everyone is happy to see him after his earlier betrayal. Still, there's little time for bitterness when the office Christmas party is only a few hours away.
The two Heterodynes that attacked Tokyo have merged into one, with Kokubogar and its main pilot Iizuka trapped inside! Whilst the others search for the now missing Akagi, Shirota takes on the role of main pilot, and plans a joint operation with the army to contain the Heterodyne until Domeki's latest weapon can arrive to finish it off and save Iizuka.
With Akagi in hospital, Dai-Guard is out of action, and the army are only too happy to send out Kokubogar to fight Heterodynes in its place.
With Shirota's help, the army has built Kokubogar- a brand new giant robot that they hope will replace Dai-Guard and end the days of civilians saving the world. Determined to prove that their robot is still the best, the Dai-Guard team agree to compete against Kokubogar in a kind of "Giant Robot Challenge".
Dai-Guard finds itself in trouble when a balloon type Heterodyne shows up.
It's a day free from Heterodynes, but certainly not free from tension.
News of the rebuilding of the old park sparks Ibuki's old memories of playing there with her father.
Faced with the prospect of having to turn Dai-Guard over to the army, Akagi becomes determined not to make a single mistake.
The fighting may be over, but the paperwork is just beginning, as damage claims and lawsuits related to Dai-Guard's last mission start piling up. Whilst the rest of PR Division 2 buckles down to tackling the economical fallout, Aoyama decides that he wants nothing more to do with Da-Guard, and quits his job.
Twelve years ago, the Earth was attacked by giant invaders. To defend our planet, the Earth's greatest minds and corporations assembled to design a giant robot of incredible power. Unfortunately, as with most government projects, the contract went to the lowest bidder. Fortunately, by the time the robot was ready, the mysterious invaders had already disappeared without a trace. The giant robot became first a curiosity, then a tourist attraction. But now the invaders are back and the only thing in their way is Dai-Guard and a young team of office workers who've been supplementing their regular incomes as part time pilots and tour guides. Can these reluctant heroes halt their alien foes while simultaneously concealing the defects in their giant robot?