Once Upon A Time (Marvel x OUAT)

OUAT x Marvel (AU)
Peter "Ben" Benjamin Parker knew that every breath that he took, every step that he walked, the past that he was constantly running from was catching up with him and that he was only biding his time until it finally caught up to him. He had no idea that his greatest regret and greatest love was going to be the force that walked, or more like ran, back into his life only to drag him back into the past he was trying to forget.
Emma Swan thought that she finally had found some peace. She had reunited with her son, she had found her family, and she had found the answers to her past that she had been searching for. When the time came for the favor that she had owed to Mr. Gold, otherwise known as Rumpelstiltskin, to be paid in terms of finding his son; she had no idea that she was going to reunite with the person she was trying her hardest to forget. The cause of her greatest heartbreak, but the person who gave her the greatest gift that she had ever received but could never cherish, her son.
Together they are a force to be reckoned with, but apart they are broken pieces waiting to be put back together again. However, in order to mend broken hearts and regain trust to find the ending that they have been looking for, they will travel through realms and fight for the lives of their family and each other, to hopefully be reunited together as what they subconsciously always knew they were... True Love.

In which...
The Avengers are brought together to learn the true story of Peter Parker, also known as Spiderman.

{Neal Cassidy does not exist in this story and will be replaced with Peter Parker}
{Based on the Once Upon a Time storyline and some mentions of the Marvel storyline, however, Peter Parker is in full use}
{Please remember this is partially an AU, so part of the timeline will probably not make sense}
{Disclaimer~ I DO NOT OWN ANYTHING BUT MY OWN STORYLINE}