Bob's staff simply acquired BIGGER with probably the most mega construct EVER! Meet new staff members Thud, Crunch, and former TV star Ace. They assist Scoop, Muck, and Lofty clear the quarry to make room for an thrilling new dam and reservoir. Nonetheless, a rival contractor tries to undermine Bob and it is as much as the staff to save lots of Spring Metropolis. Will they be as much as this mega problem or will all of it find yourself washed away?