Chasing after a night sky

During a cold night, a chaotic magical event results in Remus Lupin and Sirius Black being hit by a rare rejuvenation curse. The spell de-ages them to their 15-year-old selves, complete with the memories and personalities they had at that time-but with no memory of their future selves or lives.

Now they are going back into Hogwarts in their teenage forms, they must navigate life at the school once more, trying to keep their true identities hidden. Neither knows the other has also been affected by the curse, leading to plenty of confusion, tension, and misunderstandings as they
encounter their past friends and enemies.

Adding to the challenge, the golden trio seems really curious about the sudden arrival of two new "transfer students," whose uncanny resemblance to younger versions of Remus and Sirius begins to raise suspicions. Meanwhile, Dumbledore may or may not know the truth and is keeping a close eye on the chaos.

Will Remus and Sirius uncover the truth about their condition, find each other, and break the curse? Or will their second chance at Hogwarts lead to more trouble than what they can face?