Main Timeline

Heidi and Friede face off in a final battle to determine the fate of the world. On a livestream to the world via the Iono Zone, Heidi and Friede fight at the top of the Ruined Kingdom clocktower and battle. Heidi becomes victorious and kills the World Cleanser once and for all, saving the world. Heidi then announces that she will take the role of Acting-Arceus of the world until she can find a way for the world to continue without an Arceus at all.

Heidi buries Friede's Legend Plate and Greatsword in honor, then buries Izanami's Legend Plate right next to it.

Link to the Creator Clash plot

Heidi hosts a Christmas party at the Hall of Origin and invites everyone, including Friede and her trainer, Dawn. Dawn spends the time at the party to say one last goodbye to her friends before passing away by Friede's side. She had passed away 2 days prior to the party, but Friede resurrected her temporarily so she could do just that.

Dawn is buried and mourned the next day. Then, weeks later, Friede challenges Heidi to one final battle in the Clocktower of Ruined Kingdom.

Link to Final Holiday plot

Jörmungandr visits Heidi in the Hall of Origin after he learns that she's his daughter. After a small talk, Heidi thanks Jörmungandr for being there for her and for being a father figure to her. During their shared time together, Lacey appeared and decided to spend time with him as well. 

Heidi informs George about her adventure when she went back in time, informing him that she had obtained Meredith's Soul Dew. She intended to use the Soul Dew to channel Infinity Energy into it and have him speak to Meredith. Jörmungandr agreed.

Heidi channels the Soul Dew, allowing Jörmungandr the ability to give a speech. There, he reveals that he is aware and accepts that Heidi is his daughter, that he had taken the path as a pacifist and a teacher, and that he's always cared for Heidi as a daughter, even before he knew that she was his. Meredith responded to the message, informing him that she is proud of Heidi and everything that she's done, that she misses him, and that she has faith that the world will be saved. Once the communication ended, Heidi, now knowing for the first time that Jörmungandr is her father, hugs him and is happy to know that her father was with her all along.

Later, Heidi and Lacey enter in the Soul Dew. Heidi shares with Lacey her revelation of who Heidi has decided to be:

“…I am… Latias. I’m a Latias that takes the mantle of Creator to protect those she cares about. I’m Lacey… but also Heidi…. But, more importantly, I am… me. Just me. No tricks. No dillemmas. I’m just… myself, and I’m happy to be exactly that…. And happy to be your Light Sister, of course, heh.”

Link to the Jörmungandr Legendary Adventure

Now that Melony has the final shards of her Griseous Core, Heidi and Melony enlist the help of their ally, Shukukou, to assist them in returning the core to Melony's Distortion World. Shukukou sends her Necrozma and her Zacian to assist. With their help, Necrozma brings the final shards into Melony's Distortion World while Heidi and Zacian stay and watch. Melony accepts the shards, completes the core, and returns outside, finally completed.

At the same time, Nergal and Nyx keep watch. Nergal warns Nyx to not intervene; however, Nyx does not listen and gets jumped and easily defeated by Necrozma and Zacian, with the final nail being Heidi catching her in a Dusk Ball and teleporting it to the middle of the ocean. Heidi, Melony, Necrozma, and Zacian return to Shukukou unscathed and Melony thanks the Arceus for her assistance.

Heidi and Melony return home. Melony pledges her full allegiance to Heidi and Heidi accepts.

Link to Giratina Legendary Adventure

Izanami dies to Friede in a duel and passes down her Legend Plate to her successor, Heidi. Heidi, only learning of the succession after Izanami's death, grieves her adoptive mother and slowly comes to terms with her new duties. Heidi and Rayquaza agree to a divorce to maintain balance in the world. Zinnia releases Heidi so Heidi can be an independent Arceus, and Heidi, Melony, Tor, and XD001 travel to the Hall of Origin so Heidi can become an Arceus.

Link to the 1000 Cuts plot

The Sky Pillar crew gathered together to host a large holiday party at their home since Lillie wished to spend the winter holiday with her Hoenn family. Not only that, but Tor also arrived at Sky Pillar to meet her new family. During preparations, they would receive gifts from another world in gratitude ranging from sweets and spices to clothes and jewelry... and a boot to the head.

During the party, many of the group's friends and family arrived at the party from all over the world and even other worlds. Everyone had a fun time chatting, battling and spending time together. Several others even ventured to Dragonhark Altar to visit Rayquaza. At first, it was just Heidi and a guest or two, but things were quickly heating up as Enamorus appeared and was promptly put in her place after mistreating everyone involved. Then, Jeanne appeared and eventually introduced herself and her youngest sister, Andrea, to Rayquaza and Heidi. 

After the party, Rayquaza agreed to let Jeanne and Andrea stay with him in Sky Pillar while they stayed in the world.

Link to the Hoenn Holiday event

Lauren is captured by Team Rainbow Rocket and becomes a Shadow Pokémon. However, as Team Rainbow Rocket expanded, they also attempted to lure and capture Heidi. Zinnia, Leaf Fuguri, Rayquaza, Heidi, and others go to Johto to stop them. 

Heidi willingly becomes Shadow Lacey to hunt down Team Rainbow Rocket and destroy them once and for all, killing Giovanni and destroying all of Cinnabar Island.

Link to Rainbow Road plot