Lotte tells Anna that the last best chance of saving both Takt and Destiny is to put them in cryogenic stasis in order to buy time to counteract the effects of their contract. It could be years or decades before a cure is found, but if they do nothing, Takt may not last the month.
With Takt in such a precarious state, the last thing you want to see is Sagan causing the Symphonica to be completely overrun with D2-spawning giant purple crystals. Why, do you ask? Because Sagan = Bad Guy. It looks like the crystals engulf and kill him, which I guess makes this his magnum opus…?
Whatever his motivations to destroy everything he’s built and off himself(?), Sagan’s actions are the perfect excuse for some serious Musicart ass-kicking. We get glimpses of various other heretofore unseen Musicarts, but the only three who can truly save the day are Takt and Destiny, backed up by the now Maestro-less Titan, who has more of a sharp edge to her now.
Anna and Lotte end up trapped deep in the Symphonica’s labs by the crystals, and here Anna shows how awesome she is by carrying her paralyzed big sister on her back in order to find a way out. It isn’t long until they encounter a D2, but they’re saved in the nick of time by Walküre.
Eventually Anna, Lotte, and Walküre end up in the same mezzanine as Takt, Destiny, and Titan. The Musicarts successfully defeat all of the D2s in the immediate vicinity, but at a seemingly heavy cost: Takt can barely stand, and the battle has surely shortened his life from a month to mere days, if not hours. Even so, he orders Titan to take Anna, Lotte, and Walküre to safety while he and Destiny press on to Sagan—whom they assume is still alive.
When Anna tells him it’s a suicide mission, he says he knows, but he’s got his mentor Lenny’s work to complete along with his own music, none of which can exist as long as Sagan and his machinations are still going on. Somewhat curiously, Anna gives Takt a big old smooch, then makes it clear she has no idea why. I can’t say I can either, aside from the fact that the big sister act was to hide her feelings for him? This development has come far too late in the game!
On their way deeper into the Symphonica, Destiny notes how quiet Takt has become post-kiss, and even seems to display a slight measure of jealousy about it. That’s the last bit of comedy in the episode, however, as they soon enter a huge area absolutely crawling with D2s. Hell is waiting for them there, holding Heaven in a princess carry, and Heaven then stabs both of them with her tuning fork.
They both turn into a puddle of black goo, which then turns into several floating machine gun emplacements that destroy all of the D2. Then the guns transform into a new Musicart boss Orpheus: an unholy merging combination of Heaven, Hell, and the crystals. Considering how strong she’s likely to be, I suppose we’ll have to suspend our disbelief Takt has enough left in the tank. The question is, win or lose, will the show really kill him and/or Destiny off?