Fairytale

A fairy tale is a type of short story that typically features European folkloric fantasy characters, such as fairies, goblins, elves, trolls, dwarves, giants, witches, mermaids, or gnomes, and usually magic or enchantments. Fairy tales may be distinguished from other folk narratives such as legends
In less technical contexts, the term is also used to describe something blessed with unusual happiness, as in "fairy tale ending" (a happy ending)[2] or "fairy tale romance" (though not all fairy tales end happily). Colloquially, a "fairy tale" or "fairy story" can also mean any farfetched story or tall tale; it's used especially of any story that not only isn't true, but couldn't possibly be true.