|Ellen Page||Juno MacGuff|
|Michael Cera||Paulie Bleeker|
|Jennifer Garner||Vanessa Loring|
|Jason Bateman||Mark Loring|
|J.K. Simmons||Mac MacGuff|
When precocious teen Juno MacGuff becomes pregnant, she chooses a failed rock star and his wife to adopt her unborn child. Complications occur when Mark, the prospective father, begins viewing Juno as more than just the mother of his future child, putting both his marriage and the adoption in jeopardy.