2nd row seat flooring problem

[NicoSoriano]

My 2nd row flooring is soaking in water when it rain. I've been trying to trace where the water is getting in but unfortunately I can't. And only the 2nd row flooring is getting wet when it rain. Any idea or same experience with me. Thank you in advance.

[why?]

Check the top, both the hatch and the back of the headliner to look for stains. And also below the spare tire there are all sorts of rubber grommets that could have ran away that are there in case you need to drain the back.