Highland Laddie Gone by Sharyn Mccrumb. Takes place at a Scottish Game festival in Virginia, not in Scotland. Light and fun.
Plaid isn't a fabric pattern I tend to use frequently. Mary Mashuta wrote Stripes in Quilts, which I have and Barbara Horton wrote Plaids & Stripes: The Use of Directional Fabric in Quilts .
Should look to see if I have any plaid in the stash that would work well in the next child's quilt I do for charity. It could add that bit of "dash".