Well, looks like he's changed his ways somewhat over the years. He stopped drinking, he cleaned up the family bunker, and he's graciously extended it to D'av and Jaq as shelter when the imminent silica storm hits the planet.
Meanwhile, on Lucy, Dutch shows a hologram Zeph the capsule Khlyen developed to destroy the green pool. But when Zeph puts it under analysis, she finds that inside is a spore, and that it's decaying fast. They need to pull apart the chemicals inside the spore, and replicate them, in order to keep it alive. That's going to take a lot of gravity.
So the Hullen have descended onto the ship, and cut the power, trying to smoke the Jaqobis out. It's only a matter of time before the silica permeates the airspace, unless Johnny can figure out a stopgap.
While D'av goes off with his pops to defend against the Hullen invaders, Johnny is left with Jaq to hold down the ship. It's then that a stranger descends the hatch, and reveals herself to be Charlie Fulford, a sheriff and apparent paramour of Johnny's past.
D'av and papa Jaqobis have three Hullen on their tails. Papa Jaqobis opens fire, but it's futile: he's never gone up against something that gets up after it's shot. And D'avin gets hit with a flash grenade, and is stunned, while his dad gets taken in.
When D'av comes to, he interrogates a detained Hullen. Conversation is electric, as D'av tortures him with a handy prod. The Hullen doesn't say much before the kill chip implanted into his neck activates. But he does say that Jaq isn't just any child: he's the beginning of it all. What does that mean?
Dutch takes the spore capsule into a small craft, and pilots it around a sun — way too closely for comfort — in order to use the gravitational pull to drag apart the atoms. She succeeds, and Zeph is able to analyze the contents of that capsule, but Dutch ends up going unconscious in the process.
Well, all the Jaqobis are back together! The Hullen tie the three of them together, and, to make their murders look like an accident, Charlie orders that the gas pipes be turned on to let in the noxious silica gas. This one's a tight spot for the boys.
Zeph has figured out a way to hologram her way into Dutch's cockpit, and then use electromagnetic energy from her transmission to cause the fire alarm to activate, thereby waking Dutch up. It's pretty awesome. Dutch snaps back into action, and retakes control of her ship to fly it back to safety.
Jaq returns to release the rest of the Jaqobis from their cell, and he's brought gifts: guns. The whole family reunites to kick some Hullen booty. Well, all but papa Jaqobis: they leave his abusive ass behind.
Back on Lucy, Johnny and Jaq have a heart to heart. Jaq wants to understand why the Hullen are hunting him, and so he offers up the amulet that Delle Seyah gave him before she skeedaddled. Both Johnny and Jaq think that maybe it would be best for him to use the necklace and find a safe haven.