"Every Day" is a novel by David Levithan that tells the story of a character named A, who wakes up in a different body each day. This unique experience allows A to live the lives of various individuals, regardless of gender, age, or background. The narrative explores themes of identity, love, and the impact of choices. As A navigates these daily transformations, they develop a deep connection with a girl named Rhiannon. The story delves into the challenges of maintaining relationships when one's existence is constantly changing, highlighting the importance of understanding and acceptance in love.