Max is a big dog who lives with Izzy, a medium-sized girl, who has big ideas. Izzy can build anything--a birdhouse, a wooden swing, a tent, and even a catapult that really works. So when Izzy takes up knitting, she expects to be able to knit anything. But trying to make a sweater seems impossible.

While scarves and hats knit up quickly, her sweaters always come out too big, too small, or with too many mistakes. As Izzy's knitting nightmares pile up, it takes a trip with Max to the dog park to figure out what she can do with them. Maybe these aren't mistakes after all!