Here's episode 7 of
The Destined Crossroad:
The focus shifts to a rescue mission to The Kingdom consisting mostly of secondary Ultras from various series: Astra from
Leo, Ultraseven 21 from
Neos, Ultraman Justice from the final
Cosmos movie, Ultraman Xenon from
Max, Ultraman Hikari from
Mebius, and Ultraman Victory from
Ginga S -- plus Andro Melos, title character of an obscure miniseries of short episodes that was also the source of the villain Juda from earlier in TDC. Belial and Tregear finally stop standing on the sidelines and get into the action.
Astra apparently has some kind of special tracking ability that lets him identify The Kingdom's coordinates and is the team's only way to escape to their own dimension (supposedly -- why not just take Zero with them and use his dimension-crossing power?). This seems to be a newly introduced ability, since Astra's never been given much attention or personality before. In
Leo, he was just a deus ex machina who occasionally showed up to help his big brother Leo and then left again (and for at least part of that he was being impersonated by Barbarue Seijin), and since then he's pretty much just had cameos alongside Leo.
Hikari determines that The Kingdom's energy tower is unstable and destroying the planet, explaining why the Absolutians want to conquer the Land of Light. I'm betting the resolution will involve the Ultras making peace with the Absolutians by repairing the energy tower or helping them find a new homeworld. Although I suspect that won't happen until the two main Absolutian villains are killed and the more honorable Titan takes over.
We briefly see Mother of Ultra healing Ribut in much the same way she's previously been shown to bring Ultras back from the dead, so maybe he did die? Although the Wiki just says he ran out of energy.