Will plyometrics actually increase my vert?

I have found this vid on youtube that says I will be able to add 5+ inches to my vert in a month, but I just find that hard to believe . Are plyos really that good? The exact vid name is

ADD 5+ INCHES VERTICAL JUMP IN ONE MONTH! - PLYOMETRICS WORKOUT ROUTINE!

If anyone could check it out and let me know I would really appreciate it.