Lucillia Redwing, born over 400 years ago during the time of Zeref was just recently released from her ice sleep. Zeref and the E.N.D. will soon be battling it out and she needs to stop it for the sake of the universe, she joins Fairy Tail where she meets the E.N.D. and another ice demon slayer. She takes her aunts last name as Heartfilia and shortens her name to Lucy, she needs to stay under cover from Zeref and keep a low profile, but ends up falling in love....