(Disclaimer: I do not own these characters, I so wish I did.)

The Vow, a story of Loki & Sigyn Pt. 1

Setting:

Starts prior to "Thor" (2011) and ends with the beginning of "The Avengers" (2012).

Summary/Blurb:

Sigyn Freyadottir, the daughter of an Asgardian nobleman of the noble House of Iwaldi, has known the two sons of King Odin the Allfather, Prince Thor and Prince Loki, ever since they were children. Of the two princes, it was Loki who she was around the most, as she would sometimes receive instruction in magic by Loki's mother, Queen Frigga, with him by her side. However, the two are separated after Sigyn and her family relocate to the Asgardian countryside following a family tragedy.

The years pass and Sigyn grows up into a lovely, clever, endearing young lady of sweetness, charm, grace, gentleness, warmth, humility, and devotion. She is also about to be betrothed to Theoric, a handsome young warrior who is a new recruit to an elite guard of warriors called the Crimson Hawks. As for Loki, he becomes a mischievous, clever, sly, silver-tongued, but nevertheless debonair, charismatic, handsome man, a master of magic, a skilled fighter, and the infamous God of Mischief of the Nine Worlds. When the two of them finally cross paths once again in Asgard after spending years growing up apart, they are struck and captivated by one another's transformation and by a surprising kindredness in spirit that they share as adults. In short time, a special bond and connection forms between them.

One day, while on a visit to the neighboring realm of Vanaheim, Sigyn gets into trouble when she becomes caught in the crossfires of a longtime grudge held by the current ruling house of Vanaheim, the royal House of Njord, towards her father's household, and is subsequently sentenced to prison as recompense for a crime one of her forefathers committed. What was supposed to be a brief, uneventful trip to Vanaheim goes horribly wrong and leaves Sigyn imprisoned and trapped in Vanaheim with absolutely no way of returning to Asgard, causing her family distress when she fails to return home.

In response, Allfather Odin sends Thor, Loki, the Lady Sif, and Hogun, Fandral, and Volstagg – the Warriors Three – to Vanaheim under diplomatic orders to find Sigyn and bring her back to Asgard. When they fail to find her within the time they are permitted to stay in Vanaheim and are forced to return to Asgard, only Loki, bent on finding his new friend, stays behind and continues to search for her. Eventually, he does find Sigyn, scared, alone, afraid, and imprisoned.

Determined to help Sigyn and unwilling to return to Asgard without her, Loki approaches the royal House of Njord to plead for Sigyn's release and learns from them that the grudge the House of Njord bears against Sigyn's father's household prevents her from earning her freedom…unless she marries out of her father's household and into another one. Taking advantage of this loophole, Loki formulates a plan: he will secure Sigyn's freedom by getting her married out of her household and into a new household. That new household that Loki plans on getting Sigyn married into is none other than his own – the royal House of Odin. And he plans on achieving that by marrying Sigyn himself.

Although initially aghast upon learning that a marriage of convenience to Loki is the only way she will be released from prison and allowed to return to Asgard, Sigyn agrees to Loki's plan and consents to become his wife under the conditions that they find a way to void their marriage once they return home, keep their marriage a secret from their friends and families, and put distance between one another to avert suspicions of a relationship between them.

However, after they return to Asgard, Loki and Sigyn soon find out that it's not voiding their marriage that is the most difficult challenge they face – it's staying away from each other, resisting becoming attached, and getting each other out of their minds that proves to be their biggest challenge, especially after Sigyn moves into the royal palace in order to become a teaching assistant for Frigga. What's more, Sigyn, being half Vanir, begins to have premonitions of her new husband descending into a madness and darkness unlike himself that threatens to tear his family apart and jeopardize the safety of the Nine Realms.

Motivated by an underlying sense of duty, loyalty, and devotion to help and stand by those who are dear to her, Sigyn is faced with a choice: should she keep her distance from her new husband – as she ought to – and leave him to his own devices for the sake of voiding a marriage she never planned to be in and for her impending marriage with Theoric? Or should she, against her better judgement, stay by her husband's side and stand by, help, and protect him – as she vowed she would do when she married him and became his wife – from a dark fate she has no idea how to stop while knowing very well that if she does, she runs the risk of falling in love with him, and that her marriage to Loki threatens her arranged marriage with Theoric?

This is the first part of a 2 or 3-part story about the [unknown] relationship between Marvel Cinematic Universe's infamous, villainous, but beloved God of Mischief – and the woman with a heart of unconditional faithfulness and love who he made his bride.

Starring Tom Hiddleston as Loki, Chris Hemsworth as Thor, Anthony Hopkins as Odin, Rene Russo as Frigga, Patrick Godfrey as Njord, Nikolaj Coster-Waldau as Frey, Diane Kruger as Freyja, Jeremy Irons as Ivaldi, Max Irons as Theoric, and Tamzin Merchant as Sigyn.

A/N: Well hi there! (: ﾠI've always wanted to write a Marvel/Marvel Cinematic Universe fanfiction for some time now. Thor and Loki (mostly Loki) were the ones who got me into the Marvel fandom. The character Sigyn, Loki's canon wife from the original Thor comics, made me fall in love with the series even more, but it doesn't seem like she'll appear anytime soon in the movies (I wish she would though!) There's a lot of Loki/Sigyn fics out there and I of course want to set mine apart from these existing stories, so I really thought hard about coming up with a story that is a departure from what other people have already written while more or less keeping it in sync within the MCU film canon. Here is my take and imagining of the Loki and Sigyn pairing within the context of Marvel and the MCU– albeit a few changes. Here is a summary/blurb of the first part of the story since writing a super condensed one for the story preview would not suffice for me. Enjoy! I hope to get the first chapter up some time soon.