There's a lot of stories where Caroline travels in time to meet human!Klaus but I had a story based on that trope but with a twist.

Hope has been trying to find a way to bring her dad back, since she heard stories about Alaric getting back from the dead, Damon, Bonnie, Tyler, so she has been trying to find a spell or something that could bring him back. She eventually finds a spell but makes a mistake while making a spell, so instead of bringing Klaus back from the dead she makes a spell where human!Klaus travels in time and finds himself in the 21st century. Hope needs help to hide him until she finds a way to bring him back, so she calls someone she knows will help her with Klaus, Caroline Forbes.
How will Caroline react to seeing human!Klaus? They have to bring him back to the past so Hope will exist and so there won't be any horrible changes... Will Hope and Caroline be able to let him go?

(When I thought about this plot line I thought it would end with mix emotions bc they would eventually let him go but once Klaus would meet Caroline all over again, we would see why he was so drawn to her when they barely talked. But of course can change. This is just an idea)