Okay, during this story Lupin is talking to Harry about himself, Sirius, Peter, James, and Lilly. It takes place at the Order during the school year, when Sirius is dead, and Harry's there. Please pretend it makes sense. It may be kind of hard to follow, due to the fact that most of it is a flashback. So here it goes. Each chapter switches between the past and the present, so don't get confused.
A boy was walking his dog on a leash. It seemed as though they both were miserable, but when the leash broke an amazing thing happened. They both became happy again. The dog and the boy became best friends. The boy looked after the dog, made sure he got enough food, and watched that he didn't get caught by the dog catcher. Then one day the boy was attacked by a snake. The dog immediately came to the boy's rescue. The boy was fine, but ...
Harry Potter awoke with a start. Lately he had been dreaming a lot about Sirius and didn't know why. Then he heard a noise downstairs. It seemed to becoming from the kitchen. The clock next to his bed said two a.m. Ron was still fast asleep. Harry gave a yawn and headed down the stairs.
When he arrived in the kitchen he saw Remus Lupin in front of the fire. His back was to Harry. He had sort of a sad look on his face and was holding the Marauder's map. He sighed and with out turning around said, "Harry, do you know what tomorrow is?"
"Er," Harry glanced at the calendar above the sink. Tomorrow's day was circled, "A full moon?"
Lupin chuckled, "Oh yeah, I almost forgot."
Harry's eyes widened, "How do you forget something like that?"
"It happens, but tomorrow is the anniversary of the day the four of us created this map." He held up the map and said, without reading it, "Messrs. Moony, Wormtail, Padfoot, and Prongs surveyors of aids to magical mischief-makers are proud to present the Marauder's map." He paused, "Did anyone ever tell you why we made the map Harry?"
"No." Harry was now very interested. He himself had used that map and always wondered how it came about.
Lupin turned to Harry and pulled a chair across from him. "Have a seat." When Harry sat down again Lupin continued. "Well it was your Father's idea. See, anytime we snuck out we always got caught. James's and Sirius never minded the detention, but they were always dragging me in with them."
Okay so the next chapter takes place in the past. Not all of the stories are about the map so if you find this one boring, keep reading.