As his daughter’s disappearance casts a haunting shadow over a family gathering, a repugnant father is thrust into a heart-pounding quest for redemption, grappling with suspicion aimed at his new son-in-law and uncovering chilling truths that could shatter their fragile bonds

I see the father as the protagonist on a quest for redemption. He is held back by suspicion of his new son-in-law and chilling truths.
“shatter their fragile bonds” is a bit unclear. Do you mean the bond between the father and son-in-law?
How is he seeking redemption, and from what?
In general there’s a lot going on here. I would try to narrow the focus to one central conflict with a clear protagonist and antagonist. It seems that the stakes consist of fragile bonds. But I assume that losing his daughter is forefront in his mind. Does he suspect the son-in-law is involved? If so, I doubt he’d care about being friends with him.
In what way is the father “repugnant”?
I’m pretty sure I’m not seeing what you’re really writing about.