How do you make a play screen like dungeon quest?

This is very simple. Insert a part in the workspace and lets call this part Camera so name it Camera. Insert a screengui in the StarterGui then insert a local script in screengui.

local script in screen gui

local player = game.Players.LocalPlayer

local character = player.Character

local camera = workspace.CurrentCamera

repeat wait()
	camera.CameraType = Enum.CameraType.Scriptable
until camera.CameraType == Enum.CameraType.Scriptable--lets you script the camera

camera.CFrame = workspace.Camera.CFrame
local blur = Instance.new("BlurEffect",camera)-- gives a nice blur effect

then add a button in the screen gui

local script in button

script.Parent.MouseButton1Click:Connect(function()--if click function happens
	script.parent.parent.Enabled = false --functions
	workspace.CurrentCamera.CameraType = Enum.CameraType.Custom
	workspace.CurrentCamera.Blur.Enabled = false
end)
	

or just use a cutscene plugin because that's easier