This Unreal Engine 5.4 video is about building the Spline path that will later be used to move Enemies towards their goal.
We start by creating a Path Actor Blueprint to hold the Spline Component and expose some functions to access the Length and Location Along the Spline. Next, we build the Spline in the Editor, curving around corners and ending at the Enemy Target (Base, Home, Heart, etc). Lastly, we write the Get Length and Get Location functions in the Path Blueprint, inconveniently forgetting to attach the Distance as an Input Parameter in Get Location.
https://dev.epicgames.com/community/learning/tutorials/LP3o/unreal-engine-05-building-a-level-spline-path-let-s-make-a-tower-defense-game