Replying...
Intro. Sirius and Remus argue, they end up fighting in the Hogwarts hospital wing. A cabinet of potions falls on them and they are found unconscious by Poppy Pomfrey. The two men react strangely to the potion mixture and physically become 4 year old children again but they keep their mental age of 38 years old. They take the opportunity to have a carefree childhood again. They make sure to keep all the men away from you. And create new chaos in Hogwarts.

Remus and Sirius

@Esmée