Deep

Fandom: Marvel, Captain America.
Ship: HYDRA Team & Agent of HYDRA!Reader.
Word count: 356 words.
Square: 3 "Dug too deep."
Rating: Teen.
Summary: Your team discovers S.H.I.E.L.D.'s secret.
Major Tags: Mission, monster
A/N: This is my entry to Here There Be Monsters Bingo.

The night was cold and desolate, the wind whistling through the trees.

You had been sent on a highly classified mission, an operation in which no one else seemed to be involved. The team was small but lethal.

"We're getting close," Brock said, adjusting his gun on his shoulder.

Finally, they reached the entrance to the subway facility. The door was heavy steel, marked with symbols you didn't recognize.

"What the hell is this? "You asked quietly, looking at the inscriptions.

"I don't know, but we're about to find out," Bucky replied.

Brock activated the opening mechanism, and the door slowly slid aside, revealing a dark tunnel descending into the depths of the earth. The air that came out of the opening was thick, charged with a humidity that made you feel uneasy, as if something was alive down there, waiting.

"Okay, let's move," Brock ordered, moving forward without hesitation.

You entered the tunnel with the others, and soon the darkness enveloped them completely. The helmet flashlights barely illuminated a few meters ahead of you, and the sound of your footsteps echoed off the wet stone walls. 

"This doesn't feel right," Jack muttered behind you, his voice barely a whisper.

"It's not the place, it's what they're hiding," said Brock. "HYDRA always has secrets."

"You can't imagine how much," added Bucky.

When they reached the bottom, they found themselves in front of a huge metal door, much older than the previous ones. It appeared to be rusted, but the inscriptions on it shone with a faint glow.

"Be careful what we find down here," Bucky warned.

"They've already dug too deep. There's no turning back," Jack said, not taking his hand off his gun.

Brock activated the control panel, and the door opened with a creak that echoed through the corridors. A cold, putrid air came from inside, causing you to instinctively recoil. 

"What the hell is this? "you muttered, slowly moving forward with the others.

"S.H.I.E.L.D. dug too deep, looking for power. They found something, something they shouldn't have," Brock said, almost to himself.

"We're getting into something much bigger than we imagined," Jack said.