Twilight, Shining Armor, and Cadence take a trip to Dead Pony Lake(subtlety thy name is this fic) to go fishing. They get something allot more horrible then what they intended.
Rainbow Dash has spent nearly five years away from Ponyville, fighting and dying alongside so many other Equestrians, when a piece of home unexpectedly appears at her hooves.
After thanking Sherlock Hooves and John Trotson from Cadence's foalnapping, she invites them over for a privet dinner with her husband and her sister-in-law. At dinner, Sherlock deduced a secret that Twilight has hidden in plain sight.
When Granny Smith lay on her deathbed, her grandson confesses his darkest secret from his foalhood. About the unsolved double murder of his parents. He tells what and why it happened.