A scuba diving instructor, Nana and an ordinary salary man, Daiki live together in a small apartment. After purchasing a 'corporative' house together in a residential complex, they soon decide that they want to conceive a baby. This is a desire which doesn't come along too easily for them. So, the two of them set out on a mission to succeed with their new objective. Based on the original story by author Mayumi Nakatani.