Bob's team just got BIGGER with the most mega build EVER! Meet new team members Thud, Crunch, and former TV star Ace. They help Scoop, Muck, and Lofty clear the quarry to make room for an exciting new dam and reservoir. However, a rival contractor tries to undermine Bob and it's up to the team to save Spring City. Will they be up to this mega challenge or will it all end up washed away?
This is an episode list of the 2015 Bob the Builder series, originally broadcast on Channel 5 in the UK. During the course of the series, 130 episodes aired over three series from 1 September 2015 to 30 December 2018.