Oh Baby: Songwriter Ruben does not take life too seriously and at least of all love. After the sudden death of a fling, he finds out he is the father of her eight months old son. His life is suddenly turned upside down. Without any preparation Ruben has to take care of baby Oscar. And as if that isn't enough, her new sister in law Lucy decides she wants to take care of her nephew as well, if necessary together with Ruben...