Life was better in the old days. Or was it? That's the question Greg Heffley is asking as his town voluntarily unplugs and goes electronics-free. But modern life has its conveniences, and Greg isn't cut out for an old-fashioned world. With tension building inside and outside the Heffley home, will Greg find a way to survive? Or is going 'old school' just too hard for a kid like Greg?

A Valentine's Day dance at Greg's school has turned his world upside down. As Greg scrambles to find a date, he's worried he'll be left out in the cold on the big night. His bestfriend, Rowley, doesn't have any prospects either but that's small consolation. Then an unexpected twist gives Greg a partner for the dance and leaves Rowley the odd man out. But a lot can happen in one night, and in the end, you never know who's going to be lucky in love....