Makoto Konno is just your average energetic high school student. She likes to sleep in, arriving at school at the last possible moment, gets average grades in school, likes to play baseball with her two best friends Chiaki Mamiya and Kousuke Tsuda, complains about her little sister, and has no idea what she wants to do with her future. Everything about her life is pretty ordinary. Until one day, she discovered she can leap through time...

If you like sci-fi, fantasy or adventure, then this movie is probably not for you. While it has time travel, that's not really the main focus of the story; time leaping acts more as a plot-device to develop the characters and the story. Although some parts of the time leap are explained, it's best if you don't question how it works (like what happens to the current time line when Makoto goes back) and just take it as it is, else you'll end up going in circles and get a headache. The story focuses more on the relationships and the characters than the logics of time travel and how it works, and that's what you should focus on as well.

However, that's not to say the movie is all mellow and slice-of-life. There's action, humour, romance in it as well.