This takes place a few days after the battle at the Ministry. Fred can't sleep, and neither can Harry. They have a chat by the fire.
It's the summer after 4th year. Harry comes to the Weasleys' house after being at the Dursleys, but he's irritable and exhausted. Ron and Hermione help him out.
Mrs. Potter calls James at home one day, only to find him much busier than she expected. Fluff! Pre-Harry days. These characters and their world are JKR's, not mine!