Four months have passed since the trial. Berry is now a ghost herself, and has joined the detective club alongside Hack and her friends. They're trying to capture Phantom Zero, and discover the truth behind the Zero Phenomenon. And that's when a certain client approaches them. This man wants them to find his missing daughter. But after a bit of digging, it turns out the missing girl isn't his daughter, but the female avatar that he had been using. Not only that, but the timing of the disappearance seems to have something to do with when Berry and Hack were caught in a Zero Phenomenon incident.

Berry is helping Hank sort through the junk that he has salvaged at the harbor when they encounter an old friend of Hank's, named Will, who informs them about an older model of satellite that's expected to crash down into the nearby sea. Back at the agency, the peacock feather-like circuit that Watson received from Analytica is being analyzed. When Hank returns, he insists that they all head to the area Will tipped them off about.

After being suspected of being Phantom Zero, Berry and the club use Deco disguises in order to escape. Meanwhile, the customer center is in a frenzy, thanks to reports of Phantom Zero that they're receiving from all over the place. They dispatch a search team to the slums. Finn and the detective club take shelter in one of Finn's secret hideouts, with Finn stating the only way they can clear their names is to head to the mysterious location known as Mark Twain, and apprehend the true Phantom Zero.