(After getting his revenge on his former mother and his exes, Nathaniel could finally relax as he knows he won't have to worry about them anymore.)

(He is currently seen reading a book as Zatanna and Rocket get fascinated by his reading.)

Zatanna: Who knew he was so wise with words...

Rocket: I didn't know he liked to read.

(As he keeps reading, Miss Martian comes in.)

Ms. Martian: Sorry to interrupt your reading, Nathaniel... but we have a problem.

Nathaniel: Huh? What kind of problem.

Ms. Martian: Blockbuster is attacking Metropolis.

Nathaniel: Another attack?

Ms. Martian: Conner, Dick, Wally and Aqualad are trying to stop him, but I don't think they will make it.

Nathaniel: (gets up) I will save them. I promise.

(Then Nathaniel places the Seiken Swordriver in his waist and pulls out the Brave Dragon Wonder Ride Book.)

BRAVE DRAGON!

(He places the Wonder Ride Book in the Seiken Swordriver, and then pulls out the Kaenken Rekka.)

REKKA BATTOU!

Nathaniel: Henshin!

BRAVE DRAGON! REKKA ISSATSU! YUKI NO RYUU TO KAENKEN REKKA GA MAJIWARU TOKI, SHINKU NO TSURUGI GA AKU WO TSURANUKU!

KAENKEN REKKA!

(He becomes Kamen Rider Saber and leaves the base as Zatanna and Rocket follow him.)

(Timeskip)

(Superboy, Robin (Dick Grayson), Aqualad and Kid Flash (Wally West) are seen fighting Blockbuster, who brings them down easily. Suddenly Saber comes in and slashes him. The villain then punches him and lifts a rock before throwing it at Saber, who manages to dodge it. The Kamen Rider then activates his Wonder Ride Book again.)

BRAVE DRAGON!

Saber: Dragon Wonder!

(The Brave Dragon comes out and easily brings Blockbuster down.)

Robin (Dick Grayson): (turns to Saber) You're pretty good at that.

(Suddenly the heroes feel a headache, and everyone turns to see Count Vertigo.)

Vertigo: You're really crafty, new hero.

Black Adam: But you can't stop us. You have merely gone to the point of no return.

(Then they pick up Blockbuster and leave the battlefield.)

(Timeskip)

(Back to the base, the team is discussing the attack in Metropolis.)

Superboy: What are their plan anyway?

Nathaniel: All we know is that the attack in Metropolis was only the beginning.

Robin: You're right, with the Legion of Doom roaming around, it's possible other cities end up getting under attack as well.

Aqualad: Well, I guess we'd better get going.

Robin: There's a difference between bravery and recklessness.

Nathaniel: When preparation fails, there's only hope.

(Then a Wonder Ride Book appears in front of everyone, and Nathaniel picks it up.)

Nathaniel: Diago Speedy!

(Timeskip)

(Nathaniel and the Team go to Gotham, where the Legion of Doom is preparing an attack.)

Nathaniel: I'll save everyone!

(He places the Seiken Swordriver in his waist and pulls out the Brave Dragon Wonder Ride Book.)

BRAVE DRAGON!

(He places the Wonder Ride Book in the Seiken Swordriver, and then pulls out the Kaenken Rekka.)

REKKA BATTOU!

Nathaniel: Henshin!

BRAVE DRAGON! REKKA ISSATSU! YUKI NO RYUU TO KAENKEN REKKA GA MAJIWARU TOKI, SHINKU NO TSURUGI GA AKU WO TSURANUKU!

KAENKEN REKKA!

(He then places the Diago Speedy Book in his driver, puts the Kaenken Rekka in the Seiken Swordriver and pulls it out again.)

SOKAN! DIAGOSPEEDY!

(The Diagospeedy bike is summoned and Saber hops on it before driving it. Suddenly some clown thugs try to stop him, only to be slashed while Kid Flash beats some of them. Saber proceeds further as more clown thugs stand in his way, only for Aqualad to help him to bring them down. Suddenly Count Vertigo comes in.)

Vertigo: We got some tricks in our sleeves. You can't stop us.

Saber: Wanna bet?

(Saber starts fighting Count Vertigo while the rest of the Team faces Black Adam and somehow manages to defeat him.)

Superboy: You're supposed to be a god? (scoffs) You're a joke.

(Then Count Vertigo attacks them.)

Vertigo: My patience is wearing thin!

Saber: (comes in) Focus on me, bitch!

JACKUN TO DOMAMENOKI!

(He places the book in the third slot of his Seiken Swordriver and prepares to change forms.)

REKKA BATTOU! NISATSU NO HON O KASANESHI TOKI SEINARU TSURUGI NI CHIKARA GA YADORU! WONDER RIDER! DRAGON! JACK-TO-MAMENOKI! FUTATSU NO ZOKUSEI O SONAESHI YAIBA GA TOGISUMASA RERU!

(Saber changes forms and shoots some beans on the ground, making a beanstalk grow, and then he goes up with his Diagospeedy before slashing Count Vertigo.)

Vertigo: (stern) You're getting on my nerves! I will not be defeated!

Saber: Yes, you will, because I will decide this story's ending.

(Saber prepares his finisher.)

HISSATSU DOKUHA! DRAGON! JACK-TO-MAMENOKI! NISATSU GET! F-F-FIRE!

Saber: Shiryu Shuugekiha!

(After taking to the air, Saber binds Count Vertigo in a beanstalk-like vine as he descends to deliver a fire-enhanced kick. Once Saber hits him, a large green book-like constructs and a red fiery construct resembling the Kaenken Rekka are projected. Saber then descends further, not only increasing the power of the kick, but also making the sword projection pierce through the book projections. Suddenly another book comes into his hand.)

Saber: Peter Fantasia.

(Cut to LexCorp, Lex Luthor is seen unhappy.)

Lex: It looks like Count Vertigo has failed...

(Then Lex leaves his room as the screen fades out.)