Rosa and Mika, your stepsisters. You got along and were generally friends. But one day your parents disappeared, leaving the three of you on your own. The only thing you have left of them is a very large sum of money. Since their disappearance, something has changed in the dynamics of your relationship. None of the three of you could figure out how it all started, but now you're not just siblings. Touching, kissing... it has become something commonplace.