This is a side story takes place at the end of part 2 of Seven Ponies, Seven Trials, Seven Loves.

Sargent James Cage was in a explosion where he was mortally wounded, this did not last as he awoke on Sweet Apple Acres in a body of a unicorn pony.
James taking the name of Silver Wrench manages with no knowledge of Equestria and only knowing a few ponies manged to save the farm with the help of Twiligth Sparkle, but that isn't the beginign of this story.
James/Sliver Wrench learns not just he unable to return home, he dead on his old world, and a immortal princess whats to keep his true identity secret.

How do you recover from losing everything including his family and home, a new and unfamiliar body? Can Silver Wrench's new Ponyville friends accept him and help him deal with his issues and transition to a helpful member of pony society or is Silver Wrench is going to fall apart as a emotional wreck.