 Author Jeff Kinney is going to kick off a project aimed at transforming downtown Plainville in the town where he currently calls home. The community celebration is Saturday, set for 10 a.m. The large parking lot at routes 1A and 106. It'll include the demolition of one of seven buildings to be cleared to create Plainville Square. The Diary of a Wimpy Kid book series creator plans to include an anchor restaurant, beer garden, and town green.