Miki Ichinose (Mirai Shida) is the girl next door. She is an average junior high school second grader,who likes spending time with her friends and prefers extra curricular activities to studying. She also enjoys dating her year-older boyfriend, Satoshi Kirino (Haruma Miura).Her teenager life, however, becomes no longer typical when she gets pregnant and decides to keep the baby.

Everybody objects her decision to become a mother at such a young age.Her family and relatives worry about what others will say. Her teachers and classmates are only concerned with their school's reputation. Even Satoshi refuses to accept his future role as a father. Miki feels that nobody is on her side, and almost decides to give up the baby. But she suddenly realizes and says to herself: "Everyone is against me except for one person, the one who is inside me;my baby!"

Miki finally decides to keep the baby, and flees home to find a place to give birth peacefully. Her journey is, of course, full of hurdles: People,when finding out about her situation, begin pointing fingers. And some even become abusive towards her. Still, as in every journey, goodhearted people are always there to help. In such a harsh situation, Miki never loses her cheerful and positive attitude, because she already knows she will never be alone again. As Miki begins to show, she also matures mentally by rousing maternal instincts, attaining strength and tenderness as a future mother.

Following a girl's coming-of-age story, in front of our eyes unfolds a human drama exploring the various faces of love.