Sakuta is quite hard done by at the moment - his parents have left the country so he is currently homeless. One day, he is walking down the street when he feels something wet fall onto him, looking up, a young girl named Enishi falls onto him too. Enishi claims to be an apprentice goddess of marriage and tells Sakuta that what fell onto him was actually "God's Pheromone" which means that every girl he meets will fall in love with him and that this pheromone cannot be collected until he falls in love too.

Just after this, Sakuta saves a rich girl called Mirai from some thugs and she falls in love with him (due to the peheromone's power). Then she decides to let Sakuta transfer to her school as a reward.However this is no normal school, Mirai attends the Princess Mary - a high-class school on a cruise liner!

Now his new life starts, what will happen to him now?