He tried to gather allies

Dr. Menon was a genius in invention and quantum mechanics. She was the smartest person Mark knew, and would likely know how to handle such a virus. Mark went to her lab on the cliffside, slamming open the door and running inside.

Dr. Menon was in front of her newest device, too engrossed in building it to notice Mark run into the room. She was 30 years younger than when Mark met her, so he was surprised to see that she was quite hot in the past. Her rough blonde hair was tied behind her head into a ponytail, likely to keep it out of her work. Her lab coat was wide open however, exposing mere bikini covered skin to the dangers of the world, so clearly lab safety wasn't her best subject. Mark had heard the story of how she once used a device to make her boobs grow to gigantic sizes, but even he wasn't expecting them to practically be the size of beach balls. Despite the size they didn't seem to bother her, as her bright green eyes focused intensely on the device she was making.

"Um, Dr. Menon." Mark finally spoke, getting the attention of the inventor and finally getting her to face him.

"Who are you?" Dr. Menon tapped her foot on the ground as she thought. "You have a familiar air to you, but I can't quite figure out who you are."

"It's me, Mark! I've come from the future!"

"Mark!?" Dr. Menon couldn't believe it. The Mark she knew was just a little toddler, and this scruffy old dude claimed to be him from the future. "Prove it."

Mark looked confused. "How?"