Dork diaries a valentines special

What Nikki thought to be a stupid health project, turns out to be the thing that nearly ruins her life. Not to mention that with the valentines dance coming up, Nikki is doing everything she can to make her crush Brandon ask her to it. But of course, her arch nemesis Mackenzie Hollister is also competing for Brandon's affection. Can Nikki overcome Mackenzie and finally give her what she deserves?