The whole thing is only a couple secs long, but on YouTube it's shown in a loop to make it seem longer. If you've seen other films like this, then you're probably aware that many of these early films had no plot. Filmmakers filmed anything they could, regardless of story. "La Vague" isn't too interesting when viewed without a historical standpoint because not much is happening and the title gives it all away. (No plot twist at ALL!) But, being one of the very first films ever made (made after Le Prince's movies and Edison movies, but before Edison opened his Kinetsocope parlor) it remains interesting for film buffs and historians. You're seeing history. So enjoy.