Tobias' POV

The ceiling is jolting and creaking and opening, revealing the huge bulks of gas boxes above my head. They begin to fall and Tris is still on the other side and the door is barely damaged.

Only about a tenth of the total gas boxes have fell and have started fizzing around me, this will increase the more the damage the door receives.

I cover my mouth and pinch my nose with my left hand, in hope that it'll keep the gas out of it but I can feel it pushing, forcing itself in. My eyes burn and sting and my throat itches.

Tris screams, and this time not in frustration. I can feel her two fists hitting the door, as if she's trying to cause herself more pain to stop it, to control it. I almost let my hand drop, stupid mistake.

"I'm okay, just stay there." She says calmly through tears.

She trying to reassure me that she's fine but it's not working. Still I don't know what the cause of her throbbing is. Perhaps she's been shot. Time seems to be going slower than usual, perhaps that's because this might be the only time my brain will work and it wants to retain my final moments or perhaps I'm still in shock from Tris' unexpected arrival.

I move back over next to the door frame, staying to the right to avoid getting hit with it when, if she manages to get the door open. I can hear her heavy breathing, her miserable groans and the scattered rhythm of her kicks; I want to hep but if I push it, it'll only move it back to its place. I don't remember much about when I knocked the door down but I swear it wasn't that difficult to take it off its hinges. Then again, I don't remember Tris being that weak either. The gases side effects are worse than I thought. I'm glad that I never had to endure them as I was given the cure, almost straight after my suicide mission – she must have expected I would try to escape, whether that means the room or the Earth. I need to cough.

What if Chloe's strengthened it? I think as the thumps stop. My eyes widen as my stomach flips, why has she stopped? I rise up from the floor where I was kneeling and get a massive head rush and it doesn't go away. I'm dizzy and my legs can barely hold me. I take a wobbly step towards the door when a massive bang sounds. I can see light coming from the other side of the door hazily which means she must have broken the top hinge. I hear her gasp in surprise, followed by more and more grunts through the hissing sounds around me, and the rattling of her hands pulling the door, trying the break the last metal clasp.

Before I can think about what I'm doing, my both hands are grabbing the side of the door through the crack she's already ripped off, leaving my mouth and nose vacant for gas. I pull it hard towards and I can feel her hand on mine pushing it my way. Though I didn't think it was possible, more boxes clatter in a heavy rhythm as if chanting for my death. The urge to cough is now a necessity, so I cough, and my lungs drown in gas. Although, the opening is not big enough to fit anything through and my eyes are blurry I can see Tris' face. Well, more specifically her eyes (she's wearing a gas mask). They look onto mine and we exchange so much sorrow, guilt and desperation in that one glance that I can't look away, all I want to do is look at her, not the boxes or anything else, just her. I can't. Not even when the tension in my shoulders is released and I hear I snap of metal. Not even when Tris widen the opening by pushing it to the side. Not even when my head burns and tingles at the same time and my lungs burn. And not even when the dots try to disturb me from seeing properly and not when she crawl towards me.

If this is my last thought, I want it to be about Tris.