On a dark night, under a full moon, a childless couple find a crying baby on their doorstep and decide to adopt him. As the years pass, they come to discover that their young son is not like other children.

Marianne is going on 17, she feels too fat, and struggles with the ideals girls have to live up to to get accepted. When she meets her penpal Svein for the first time things look up, but she soon has to face new and unexpected problems when she discovers she is pregnant. Not being able to get support even from her own family, she has to make her life's most difficult decision on her own.