It really depends on the creativity of the fanfic writers. Sometimes they might meet in a dangerous mission, or maybe in a random encounter at a strange place.
It could be a wild ride! MacGyver's problem-solving skills combined with Havoc's chaos could lead to all sorts of unexpected and thrilling situations.
There are also likely fanfictions that put MacGyver in different time periods or alternate universes. Picture MacGyver in a steampunk world or in a future - tech - heavy setting. The 2016 version of the character provides a base for fans to play around with different scenarios like this.
Well, it could be in alternate timelines or during time travel adventures. Maybe a mission gone wrong sends them back to her era.
Perhaps they get trapped together in a dangerous place. As they wait for rescue, they start talking about their feelings and fears. This deep conversation ends with a kiss as they realize how much they mean to each other.
One common scenario could be during a mission. Maybe she gets caught in an explosion while trying to defuse a bomb. Another might be getting shot while providing cover for Macgyver. Or she could be injured in a fight with the bad guys when they manage to overpower her briefly.
It could be in alternate universes or during time-travel adventures gone awry. Fanfiction is full of creative possibilities!
Sometimes it happens in alternate universes or during major crises that threaten the entire time-space continuum.
A typical plotline might involve MacGyver being hurt in the middle of a mission. His team then has to either complete the mission without him or find a way to get him back in action as soon as possible. This creates a lot of tension and drama. There could also be a plot where MacGyver discovers who his true friends are when he's hurt and vulnerable, as some might abandon him while others stay loyal.
They might meet at a comic convention for kids or when they're both exploring a mysterious cave with powers that bring them together. It all depends on the author's imagination!
One possible scenario is that they meet at a social gathering. It could be a ball or a party in their world. Carlisle, being a respected figure, is there, and Esme, newly arrived in the area perhaps, catches his attention. Another scenario could be that they meet during a time of crisis. Maybe there's an epidemic, and Carlisle, as a doctor, is helping out. Esme comes to offer her assistance too, and that's how they cross paths.