Luna is in heat. Celestia, being the good sister that she is, offers to help out. And then it becomes complicated.

Luna comes from a month-long trip and wakes her sister the best way she knows how

While visiting their former home, two princesses are caught in the middle of a raging storm. They are left with nothing else but old memories. And each other.

In a silly foal's game, old feelings come back to surface. Under a mistletoe.

With each passing letter, Celestia realizes she's falling for a secret admirer. At least, until she finds out their identity.

Old, hidden desires come into the open during the innocent conversation. It quickly turns into a hot night.