Fairy Tail
In the beginning, Lucy is a young sorceress (a "mage"), who wants to join Fairy Tail Guild. On her trip, she meets Natsu, a young boy, who is looking for Igneel the Salamander. She offers Natsu and Happy (his partner) a lunch and Natsu explains that Igneel is a dragon. Lucy talks about her dream to join a famous guild, which she later told him was the Fairy Tail Guild. Later, she is tricked and taken by Bora of Prominence to be sold as a slave. She is rescued by Natsu, who is the real Salamander, and a true member of Fairy Tail Guild. He offers her to be a member of Fairy Tail. Lucy says yes and joins the guild. Since then, Natsu and Lucy formed a team. This is the beginning of the adventures that the two have while carrying out missions from the guild.