Yuto warns Momotaros that Sougo is a demon king who will destroy the world. Momotaros decides to take back the Den-O Watch which in turn makes the Grand Zi-O Watch disappear.
Yuto finds Another Den-O and the Imagin have traveled back to May 11, 2017 and asks the others not to interfere as he takes care of this.
Back at the shop, Yukihiro tells them about Takuya who is the little brother of his late girlfriend, Sayuri. May 11, 2017 is the day Yukihiro took Sayuri out of the hospital and Takuya believes that led to Sayuri’s death.
Geiz, Woz and Momotaros travel back to 2017 where the Imagin is already rampaging. Geiz says Momotaros stands out too much, so Momotaros attempts to hop back into Geiz. But Geiz pushes Woz forward for Momotaros to possess instead.
Momotaros henshins to Ginga Finally and takes on the Imagin. But Woz forces Momotaros out of his body, allowing the Imagin to get away.
Another Den-O Takuya attacks 2017 Takuya before finding Sayuri, vowing to protect her.
Geiz henshins and takes on Another Den-O outside.
When Takuya regains consciousness, he sees Yukihiro wheeling Sayuri out of the hospital. But Yukihiro is too weak to chase after them. Sougo arrives and catches him in his arms before he collapses.
Another Den-O Takuya also sees Yukihiro and Sayuri and tries to chase after them, but Geiz stops him. Before Geiz can deliver a finisher, however, the Imagin comes rolling through in the DenLiner and proposes he and Another Den-O join forces. Takuya hops into the train and they leave together.
Back in the hospital, Sougo fills 2017 Takuya in on what is going on. Takuya says of course he would never forgive Yukihiro , but Sougo relates what Yukihiro told him about Sayuri’s situation. Sayuri had a terminal illness with no cure, but she was too afraid to tell her brother.
Yukihiro says he would rather not tell Takuya the truth as Takuya hating him and having someone to blame may make things easier for Takuya.
Sougo says there must be a good reason for Yukihiro taking Sayuri from the hospital, but futureTakuya is interfering with that. 2017 Takuya would never want that and he asks Sougo to stop futureTakuya from doing so.
Momotaros is impressed by Sougo, but they argue over why Sougo didn’t ask Yukihiro where he took Sayuri. Woz sees a photo of the couple and knows exactly where they could have gone.
Deneb overhears and tells Yuto about the location, but also that Sougo might be a good guy. Yuto tells Deneb not to be fooled so easily.
Yukihiro and Sayuri arrive at the lighthouse, as do Sougo and Momotaros who arrive just in time to stop Another Den-O and the Imagin.
Sougo tries to explain that Yukihiro is doing this for Sayuri’s sake, but futureTakuya refuses to listen. The Imagin, meanwhile, summons future clones of himself to help.
Yuto arrives and tells Momotaros to give Sougo the Den-O Watch. Yuto says he doesn’t trust Sougo, but he acknowledges him.
Momotaros tosses the Den-O Watch to Sougo. As Yuto henshins, all the Watches combine again to become the Grand Zi-O Watch. And for the first time, Sougo uses the powers of all the Heisei Riders to become Kamen Rider Grand Zi-O.
Sougo uses a couple of the legend Rider powers against Another Den-O.
Momotaros tries to henshin, but Woz reminds him he gave Sougo Den-O’s power. Sougo decides to summon Den-O and Momotaros is able to hop in. Deneb hops onto Yuto and they all work to finish off the Imagins.
Sougo delivers an All 20 Time Break at Another Den-O and Takuya is released.
Meanwhile, Takuya finds Yukihiro and Sayuri at the lighthouse. She tells her brother not to be mad at Yukihiro as she had asked him to bring her here to see this view one last time. Takuya is happy.
Deneb says DenLiner is safe back in their control. Yuto asks Sougo if he is really Tokiwa Sougo. Sougo asks why, but Yuto doesn’t continue and says it’s alright.
Yuto and Deneb leave. Sougo leaves Momotaros alone just as he is complementing him being cool, but no Ryotaro though.
Sougo is transported to the future where he comes face to face with Oma Zi-O once again. Oma Zi-O challenges Sougo to a battle.
This was a very nice arc. It definitely made me want to watch Den-O very much. It was lots of fun and had a lot of heart. Definitely feels like what I’ve seen of Den-O in all the other instances they’ve popped up over the years.
It was especially fun seeing Keisuke Watanabe again play a different character and be able to play around again as Momotaros.
For the continuing arc of the season, they were definitely dropping some foreshadowing with Yuto’s comments about Sougo at the end. I wonder what that could mean.
I do like the Grand Zi-O Watch a lot, just from a toy perspective. It’s a nice collector’s item I think. Hehe Not sure about how practical it can be having to carry that huge thing around in battle lol
Definitely looking forward to seeing Hiryu again next episode. And now I realize we’ve really reached the 40s! The end of Zi-O is almost near. But I definitely feel like we still haven’t truly gotten to the endgame yet. So I will expect every single one of these final episodes will have something big or interesting. There’s a lot of threads to tie together and wrap up. And they should be able to do so now that all the tributes are finished.