When a character's major, overriding goal - one that takes priority over all others - is
to go home again. "Home" can be as specific as the character's house, or as general as his/her home planet. Usually comes as a result of being Trapped in Another World, going Down the Rabbit Hole, or being a Fish out of Water. Sometimes leads to The Homeward Journey.
As a part of a Downer or Bittersweet [...] [tvtropes.org]