Does this have correct grammar?

Hi, A person online asked me if I could tell them what an anime is about, without spoiling it. And I was thinking about saying the following: ''Well I can't say a whole lot about Tokyo Magnitude 8.0 without spoiling it, especially since it only has 11 episodes. But basically this anime depicts an actual earthquake if it were to happen in Tokyo. And the lead characters Mirai and her cheerful little brother, Yuuki are at a robot exhibit when a devastating earthquake occurs and the city falls into chaos. Now with the help of a woman named Mari, Mirai and Yuuki strive to survive this incident and get back home safely. Anyway, I really love this anime. It's very touching and definitely worth the watch(at least in my opinion).'' Does my explanation have correct grammar? Thanks