After watching season 4 of Stranger Things, I got caught by two storylines. Max and Eleven.

Max is hunted by the past through her brother's death while dealing with the ocean of emotions. And it felt like her castle was under attack. She was fighting back to don't let it crumble.

Eleven travelled back in time, diving deep into the past. However, she's been through so many battles that this time Eleven was fighting to rebuild the castle once destroyed by the past.

The keyword is time, represented by the old clock. While Max is looking back at it, Eleven is facing it.