Our promise kisss

Ava and Mason made a promise as kids. But how would they've known that exactly that small event could change their lives this much? They were just kids back then and they didn't know anything about love, but they really love each other and it was the best part of their lives. Until they took Mason away. 10 years later he's back. But the time has passed and they both grew into different persons. It's like they are completely strangers, but at the same time they know each other like their own body. But Masons behavior is getting weirder and she becomes scared. This is not the kind and simple Mason she knew 10 years ago. How will this turn out for their promise?