Twilight never expected her new castle to feel like home straight away, but neither did she expect it to be so terribly cold and empty.
She really needs somepony to help her fix that.
When Fluttershy steps up to the mark, she and Twilight embark on a task of immense proportions - making a castle a home. But when her other friends decide to intervene, Twilight soon discovers that her feelings of friendship for Fluttershy go far, far deeper that she could have possibly imagined.