I don't own Pokemon or Yu-Gi-Oh!
Crow and Yusei have a friendly duel.
Yusei and Crow also end up meeting an old friend Kalin who introduces them to "Earthbound Immortal Ccapac Apu".
At night time, Yusei's friends wait outside the infirmary. His Duel Runner, mangled from his encounter with Kalin, is tied together outside. Rally, still wrapped in a blanket after discarding his clothes earlier, clutches Yusei's worn out helmet, hoping he's okay. Yusei struggles with the pain as Dr. Schmitt removes another slice of the shard from Yusei's wound.
The door to the waiting room opens, as Schmitt and Martha emerge. They say that Yusei will be fine once his wounds seal up. Nervin, Tank and Blitz, also clad in blankets after their last shenanigan, signal their relief while Crow shouts out and begins celebrating. Rally interrupts his performance, letting out a sneeze, quickly followed by the other three blanket-clad boys dropping to the floor shivering. All of them are after catching a cold from running without clothes when they brought in Yusei's Duel Runner.
Tanner and Yanagi are shown to Leo and Luna's house at Tops. Tanner checks for confirmation that their parents are away. Luna assures them that their parents are always away and that's why XX lives here because their parents hired him to watch over us. While Leo informs them that they have plenty of spare rooms.
As Luna sits down, Leo calls Tanner aside and whispers how Luna is frail, so she can't go out much. He could never leave her alone, so both of them end up inside, which gets boring, he tells Tanner.
Yanagi calls Tanner out to the balcony-style rooftop, from which he can see the whole city. Tanner sees this as an opportunity to pick up a signal from Satellite. As Tanner rummages for a notebook computer, Leo ponders on Luna's prediction; If it's right, it would mean that Yusei has already started battling with the Dark Signers. The prediction is too unsound for Tanner to make such a call and he decides that they must wait for a call from Satellite. They wonder if Yusei has won. Tanner is unsure, but states that Yusei is not one to give in easily. Leo agrees, gets excited, and starts wondering if he may be able to help somehow.
The group begin talking about Luna's dream, where the Crimson Dragon and its five associates battled the Earthbound Immortals. Yanagi believes the dream may have been an ancient battle. Leo rips out his Deck and flips over the card, "Power Tool Dragon". He asks Luna if it was involved the battle. This sparks a reaction from Luna, as the dragon seems to resemble one from the dream. She tries to dismiss the information as not being overly important. Leo is unconvinced and believes himself to be holding one of the Signer Dragons and that he might be the fifth Signer. Leo starts dancing and singing in anticipation of a Mark of the Dragon appearing on him. Tanner and Yanagi slip over to Luna to ask if its true. She points out that Leo's dragon is robotic and that this was an ancient battle. As they glance over at Leo celebrating, Luna says that she said it to cheer him up.
Convinced that he's the fifth Signer, Leo appoints himself in charge of protecting Luna. Yanagi and Tanner pause before giving him a forced cheer of encouragement. While Xx just sighs.
Later, the gang continue to discuss the Signers. Since all the dragons fought on the same side, Leo deduces that all the Signers must be on the same side. It makes sense to Yanagi and he begins listing the names of the Signers. Leo promptly reminds Yanagi to list his name. Tanner is unsure if Akiza Izinski is on their side, as it would mean the Arcadia Movement would also be on their side. The twins are unfamiliar with this organization. From the rumors Tanner has heard, they're a nefarious organization that gathers psychic duelists to carry out suspicious experiments. Psychic duelist is another term new to the twins. Yanagi takes the liberty of explaining how duelists with such psychic powers rarely come into the world, from what he has heard. Luna asks why Akiza is there. Tanner is unsure, but assumes she may have her own reasons for being there.
Leo suggests that they try asking "Big-Sis Aki" to co-operate with them. He quickly tosses any concerns Tanner laid out aside, dismissing them all as no more than rumors. As Leo sees it, they have no reason to distrust these people. Yanagi and Tanner consider his theory. He accuses himself and Tanner of being too distrusting, like adults. Tanner sees no harm in simply discussing information with them. He takes out Blister's notebook computer to see if he has a means of communicating with the movement on it.
Inside the Arcadia Movement building, seven well dressed figures sit at a table. Sayer is located at the head of the table, with Yanagi and Tanner on the side to his left. The twins sit across from them on Sayer's left. Xx sits at the end. Yanagi checks with Tanner to see if he knows what order to use his cutlery in. Tanner reminds him that that's not their main priority; Sayer is. After hearing the story of the Signers and Dark Signers from Leo, Sayer agrees to co-operate, much to Luna, Tanner and Yanagi's surprise. Sayer asks to be excused while he sends for Akiza.
After Sayer leaves, Leo begins to celebrate over how well it went. Yanagi is surprised that it went so well. Tanner and Xx are unsure and believes that they shouldn't let their guards down. Leo writes them off as being skeptical grown-ups and wonders when they'll be getting their food. As Luna tries to calm him down, gas leaks in through a vent, causing the four to feel drowsy and fall asleep.
Sayer and four uniformed members of the Movement, equipped with gas masks, enter the room. They stare at Luna, who sleeps sitting up, while the others have all collapsed onto the table. except for Xx who "Pokemon Number 22 Fearow" blow away the gas. Sayer, referring to himself as Leo's uncle, says that he plans on making both Xx and Luna members.
Tanner, Leo, and Yanagi are dumped in a cell. Luna wakes up in a room with Akiza, who tells her to keep quiet and watch. Luna rises and makes her way to Akiza's side. Both of them stare through a full length window, where they see a Duel arena. Sayer stands at one end. At the other end, chained by his ankles and wearing a strange helmet device, stands Xx. Akiza says that it is a test.
Sayer draws "Krebons" and subsequently Normal Summons it (1200/400) in Attack Position. He then sets a card.
Xx draws and summons "Pokemon Number 408 Cranidos" (3500/3380) and he tell it to strike "Krebons" but Sayer activates the effect of "Krebons" but Xx negates the effect by using the effect of "Pokemon Number 408 Cranidos" and destroys "Krebons" (Sayer 4000 → 1700) and Sayar felt like he got headbutted hard in the stomach. He then Set one card.
Sayer draws "Psychic Snail" and subsequently Normal Summons it (1900/1200) in Attack Position.
Xx draws "Pokemon Number 208 Steelix" (5100/5480) in Defense Mode which summons "Steelixite" (0/0) and because of its effect Xx gets to do a Synchro Summon. He combines them to into "Pokemon Number 208 Mega Steelix" (6100/6140) in Attack Mode. He then tell it to strike "Psychic Snail" and the snail is destroyed by Mega Steelix's hard tail (1700 → 0). Sayar is then knocked out by the duel.
Xx removes the unneeded equipment. Then has "Pokemon Number 384 Rayquaza" destroy the window and tells Luna to hop on and to grab Akiza while she's at it. Lastly Xx then finds the cell containing Tanner, Leo, and Yanagi and brakes the bars.