local Players = game:GetService("Players")
local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")

local animationId = "rbxassetid://101466921207364"

local defaultSpeed = humanoid.WalkSpeed
local boostedSpeed = defaultSpeed * 2

local animator = humanoid:FindFirstChildOfClass("Animator") or humanoid:WaitForChild("Animator")

animator.AnimationPlayed:Connect(function(track)
    if track.Animation.AnimationId == animationId then
        humanoid.WalkSpeed = boostedSpeed
        track.Stopped:Connect(function()
            humanoid.WalkSpeed = defaultSpeed
        end)
    end
end)

player.CharacterAdded:Connect(function(char)
    character = char
    humanoid = character:WaitForChild("Humanoid")
    humanoid.WalkSpeed = defaultSpeed
end)