In a Kingdom of Vanahel that was in a land of perpetual winter, a battered and bruised Princess of that kingdom, known as Eira, stared at the ruined kingdom in extreme shame and guilt as the remnants of her army tried to hold off the enemy but were slowly failing. Her black hair reached past her shoulders which blew in the wind, she raised her arm up to block some of the snow that was hitting her face. The Princess wore a somewhat torn midnight blue turtleneck sweater and single dented iron shoulder guard with runes etched that rested on her left shoulder, and she also wore small iron breastplate. Around her neck was a blue cape with a small grey fur collar and on her cape was the symbol of her kingdom which was a symbol of a large life-giving tree. She wore a midnight blue wool pants with leather boots that reached to her knees which crunched on the snow as she limped back to the centre of the room. On her left forearm rested the sacred treasure that her family had guarded for generations called the Fire Emblem. It was made out of pure gold with two dragons etched onto it, one was small while the other one was a bit bulkier than the other one and they both were etched on there to look they were five jewels in total and they held them their claws and mouth. She watched her brother as he moved the symbols on the pedestal he was working on. Her brother wore a somewhat similar outfit to what his sister wore although he wore the cape around his waist and had a bigger fur collar. He has the same colour hair but was a lot shorter than his sister's and along his check was a scar which he gained from his sister during a part of his past that he regrets very much. The brother stopped once they both heard something snap in place and he sighed little before turning towards his little sister.

"Sister, if you could place your weapon and the Fire Emblem in their appropriate place." Eira nodded as she pulled out her sword which the blade was a little bit thicker than the average sword, along the inner part of the blade was gold with runes etched onto it, along the hilt had gold inlay with runic symbols on the hilt and embedded into the crossguard was a black jewel and fine dark leather wrapped around the handle with flat gold pommel with runic letters. Eira drove the blade into the middle of the pedestal which she heard something snap into place once again. She took off the Fire Emblem and placed it into the slot that had the same shape as it and the moment she placed it on the pedestal all five jewels started to glow. They both watched as the whole building started to shake and suddenly a swirling purple portal appeared next to the pedestal.

"So, Brother, how's this supposed to beat him?"

"Well, Sister... It won't."

"What?! Did why did we come here?! What's this for?" Eira asked but the sudden realization hit her when she thought of the ruins they were in and the portal that appeared in front of them. "Wait! I know this place! Is this really...?"

"Yes, it is."

"I can't believe it. This place is the mythical Gate? The one that connects to other worlds? I thought this place was only a myth." Before she could ask more suddenly she heard a warped noise and she stared at the portal for a few seconds before realizing that it was slowly shrinking. She was about to ask what was going when suddenly the temple collapsed on them causing both of them to take cover. Eira slowly got up and she stared in shock and fear at what she has just seen, the enemy she was so desperately tried to defeat stood before them. A very large dragon with two horns sticking out towards the direction he was facing from top of his head, multiple dark green spikes ran along its back all the way to the tail and it had very dark green scales which showed age from the countless years it has lived. It spread out its large leathery wings which it's wingspan was larger than the dragon itself. "Y-You!" Eira started to shake a little in fear as she reached for her sword but when she left nothing there, she quickly realized that she didn't have her sword on her at the moment.

"I'm sorry for everything I did." Eira heard her brother say, but before she could even do anything she felt someone push her away. She was confused at what happened but she quickly snapped out of it when she felt something pull on her and realized the portal was sucking her in. Eira quickly looked back to see her brother holding her weapon and the Fire Emblem, and watched as he threw both of them in with her. She gasped in horror at what she just saw, the dragon was reaching towards him and before she could see what happened next the portal closed cutting her from her world.

"Brother!" Eira cried out with tears in her eyes.

Eira looked around to notice that her weapon and Fire Emblem were floating around her. She desperately reached out towards them and once she grabbed them she held them close to her chest. Eira could feel herself getting very weak as her injuries finally caught up her and she passed out from the exhaustion.

In the dead of night where a small catastrophe which caused the woods west of the kingdom known as Ylisse to catch fire. A woman from the future known as Lucina but was going by the alias of Marth, the hero-king, she travelled down the path until a strange noise echoed across the quiet night. In the corner of her eye, she noticed a strange purple light off the path and with her knowledge of the past if it's true then it could only mean one thing. Lucina pushed through the bushes to find the source of the light which was purple swirling portal and the next thing to happen caused her to gasp a little as someone came rolling out of the portal. Lucina watched the portal close leaving them in the dark and she quickly went towards the unconscious woman to confirm her suspicions. Lucina careful turned her over so that she was lying on her back and she was right, it was exactly the person she thought. "So, what you said is true. It really is you..."

Eira slowly opened her eyes to see someone unknown man holding her, she didn't have the strength to protest or ask who they before she passed out again. Lucina grabbed Eira's Fire Emblem knowing how important it was to her so she strapped it back onto her forearm and placed her sword back into its scabbard. "W-Who... w-where..." Lucina was surprised a little when Eira regained consciousness but quickly fell back into unconsciousness.

"You're better off with the Shepherds like how it should be, and not with me," Lucina said and began to drag her closer to the path so they would find her quicker. Lucina carefully placed her against a tree before she left her to be found, she carefully observed her surroundings to make sure that no enemies were nearby.

Two Ylissean royalty, Chrom and Lissa, with their bodyguard Frederick and the new addition Robin walked down the path to Ylisstol after the strangeness that happened where some person and strange creatures came out of a portal. They decided to continue towards Ylisstol since the condition of the forest and fear of those creatures of appearing near the capitol. "We best make haste. With the condition of the forest, it wouldn't be wise to sleep for the night with it being on fire." Frederick said.

"Yes, and more of those creatures could be roaming around. It just wouldn't be safe." Chrom said.

"I'm glad we're going," Lissa said as she looked around the forest in case more those creatures showed up. "I wouldn't even be able to sleep out here knowing more of those things were out... there..." Lissa stopped when noticed some figure lying on the ground in front of them.

"Is something the matter, Lissa?" Robin said after he noticed her pace has slowed down.

"Look over there!" Lissa pointed ahead while looking directly forward to see Eira lying on the dirt path like she was trying to crawl somewhere. Everyone quickly ran over to her and they noticed in the light of the moon how injured she was. "We got to help her!"

"Yes, I agree," Chrom said as he tried to move her but she winced heavily. "Lissa, can you do something about her wounds. She seems to be in pain."

"Of course!"

"Do you think she fought against those monsters?" Robin said.

"It's uncertain what caused her wounds, but that does seem like the case," Frederick said.

"Well, we can't just leave her here. Let's take her back." Chrom said as the other's agreed with him.