Sector 4 Plate is a field map in Final Fantasy VII. It is a dungeon explored by Cloud, Barret, and Tifa during "To the No. 5 Reactor" located just before they reach the reactor itself after first traversing the Winding Tunnel.
A series of winding ducts, ladders, and tiered platforms supported by steel beams, traversed by AVALANCHE in order to reach the nearby reactor. The area is reached through the first duct, entered through the security sensors in the Winding Tunnel. This leads to the ladder room, consisting only of a platform to another ladder which itself leads down into the big room of the Lower Sector 4 Plate.
The big room, entered through a ladder on the right, is built of tiered platforms and contains a few ladders to other rooms. It is entered through a ladder on the right. The ladder in the middle of this room leads to the crawl duct, a narrow duct which itself leads to the small room. The ladder on the far left-hand side of the big room leads directly to the small room.
The small room is a narrower metal room with rusted walls, entered through the crawl duct at the back or through a ladder on the right from the big room. A ladder on the left-hand side of this room leads to the exit.
The exit room is a set of wooden and metal bridges connecting platforms. A duct leads to the Sector 5 Reactor, and a save point is located on the right-hand side.
Sector 4 is visited during "To the No. 5 Reactor", after Cloud, Barret, and Tifa get off the train from Sector 7 to Sector 5, and the group land in the winding tunnel. They must then make their way to the No. 5 Reactor.
|Lower Sector 4 Plate - First duct and small room|
|Lower Sector 4 Plate - Ladder, big room, exit|
In the Lower Sector 4 Plate, the player may encounter Chuse Tanks and Blugus in addition to Grashtrikes and Rocket Launchers. Chuse Tanks have fairly low HP but can deal considerable damage, meaning they should be focused first as they can normally be defeated in one hit. Blugus have much higher HP, but their damage is minimal. They should be prioritized last, and though weak to Lightning and thus vulnerable to Bolt, it is better to save MP for healing.
|Ether||Lower Sector 4 Plate - First duct|
|Potion||Lower Sector 4 Plate - Small room|
|Tent||Lower Sector 4 Plate - Exit|
In the big room on the far left-hand side, the player can talk to Wedge, who will tell Cloud that the reactor is found ahead past the ladder he is standing by. In the small room, Jessie apologizes to Cloud, and tells him that the ID scan error was her fault as she adjusting Cloud's ID card. Biggs can be talked to in the exit, and will tell them that he, Wedge, and Jessie will pull out and return to the hideout. After talking to him, he will then leave.
"Lurking in the Darkness" plays in the Sector 4 Plate.