Why it worked
The video uses a common relatable struggle (difficulty with a task) and exaggerates it for comedic effect, making it highly shareable. The slow reveal of the product's functionality at the end adds a satisfying payoff.
Summary
The video shows a person attempting to hit a golf ball with a golf club, with a phone case placed on the ground in front of the ball. It takes numerous attempts, indicated by "Take X" text overlays, before the person finally succeeds in hitting the ball. The phone case is shown to have a small compartment that is opened and closed.