Returning to Sentan Island, Akiyuki finds that many things have changed. His father has begin conducting experiments, and has hidden a very surprising patient in his home. Meanwhile, his best friend Furuichi has allowed his jealousy of to get the best of him. And the Xam’d within him is giving him dangerous power to do something about the envy that is consuming him.

The team is working at a local beach restaurant, where a battle for love breaks out between Ryouma and Araki.

It’s Golden Week and all the residents are going home except for poor Yuru.

Athena has come to Japan looking for Medusa and for that Godou will have to die, again.

Rokka is still down with a cold, so Hazuki and Miho have to mind the store and take care of Rokka. But when Shimao gets depressed, it triggers a scary phenomenon that goes beyond his usual immaterial existence...

The new Hiyoshi Liquor Store is open and Yuuki gives the gang the grand tour and speaks about future plans.

Oikawa continues her search for the passage in the wall and gets a clue while taking a bath.

The gang is back and it’s right back to work. The group has been split into two teams, Team Rice and Team Soybean. Oikawa on the other hand, is trying to unlock a mystery.

Yoshiteru has planned the ultimate revenge against her former classmate Yagyuu Sekishuusai. But Sekishuusai seems to be one step ahead, until Nobunaga appears.

Darui manages to seal away Ginkaku. Fueled by the rage of losing his brother, Kinkaku transforms into a monster that resembles a jinchuriki’s Tailed Beast State.

Tsubaki's hobby is making original T-shirt designs, but when his fellow Student Council members proclaim them "lame", he goes to his twin brother Bossun for a shot of creative advice. Then, Bossun's love for a robot anime leads him to an otaku meet-up. Will he be able to fit in?

Mr. Grizzly hears some disturbing news about an old friend, and a stranger happens upon Polar Bear’s Café.

After the mysterious phone call the person claiming to be his sister, Shogo school life gets more hectic with the arrival of a new transfer student.

During his father’s funeral, Shogo hears a voice outside his window claiming to be his little sister, before he has a chance to learn more, he is told the conditions of his inheritance.

Taiki's team arrives in the fourth Kingdom, Cyber Land, a futuristic metal city wrapped in overwhelming silence. When a mechanical Whamon in the sky teleports a mechanical Andromon army from its mouth to attack them, the team dives inside the Whamon to destroy it. There they find a human girl named Ruka who says she was lost and the Bagra army captured her. Dorulumon is suspicious, but Taiki welcomes her into the team...

When Kiriha says he saw a boy in Honey Land who fits the description of Nene's brother, Nene is at last reunited with Yuu. However, Yuu thinks that battles in the Digital World are just a game, and attempts to finish off his sister! The battle between Taiki and Yuu begins after the team saves Nene, but Shoutmon X4B and MetalGreymon are no match for Yuu's DigiXros, MusoKnightmon...

Mervamon's brother, Ignitemon, returns to the side of justice and joins Taiki's team in the fight against Zamielmon. He reveals to Taiki that the secret to Zamielmon's small, elusive size is DigiHoney, the power he steals from other Digimon. They then receive an invitation from Zamielmon to a theme park called Honey Park, and though they know it's a trap, they go there with a plan to make Zamielmon bigger so they can fight him. However, Zamielmon grows much bigger than Taiki expected, and Xros Heart must send Shoutmon DX to face his giant new form!

Taiki's team arrives in the flower-filled third Kingdom, Honey Land, where they encounter some Digimon stumbling around listlessly. Then they find Lilamon being stung by Honeybeemon to drain her power. They try to save her, but Xros Heart's Digimon are paralyzed by the attack of Ignitemon, a servant of the Death General Zamielmon. He begins to steal their power as well when a woman warrior Digimon, Mervamon, appears. Mervamon saves Taiki's team and leads them in an attack on Zamielmon - but in the scrap, Ignitemon reveals that Mervamon is his older sister! Can Taiki's team save the siblings from a heartbreaking battle?

Rook has been challenged by the Orpheus Order, but he is up against a unique opponent.