Before they arrive at the Rehabilitation Centre, each hopeless handymen designs their eco shed in the comfort of their own home. The on-site experts test them for tool knowledge and assess their handiwork only to determine that these bad builders are even worse than imagined.

After a major redesign of their eco shed frames, the handymen “get wired” by building solar panel housing and wiring their eco sheds for solar energy. Next, the group works together to build a brick barbecue.

After fixing their faulty wiring, moods go from bad to worse as the handymen find themselves installing windows and enclosing walls. Tempers flare when the handymen switch nominators and work long into the night applying plywood sheeting to their sheds. The workload and tension only increase as the handymen slap up denim insulation and wrap up their sheds with a vapour barrier. The episode ends when they attempt to build a picnic table from scratch.

The handymen get down and dirty as they put up drywall and apply mudding and clay plaster. Then, a medical emergency threatens the delicate balance of the group and rivalries come to a head. The group struggles to complete a dwelling for Ruth’s dog, while the experts determine who ends up in the doghouse after this challenge.

A surprising new addition to the group changes everything; and peace in the ranks is briefly restored… that is, until the handymen start grouting tiles and installing pine ceilings. Creature comforts inside the eco sheds start to take shape as high-tech hammocks and eco toilets are installed. Tempers heat up again, however, when the group works together on a wood-fired hot tub.

The bad builders settle in and install environmentally friendly cork floors in their eco sheds and then try to measure and calculate their way through trim and molding. Everyone builds a stereo unit and installs a TV, but it soon becomes apparent that one of the group members is a weaker link than previously suspected.

After learning proper harness techniques, the handymen tackle the roofs of their eco sheds. Roofing proves to be too much to handle as a few teams reach the end of their ropes. Other pairs, discouraged by the results, head for the floor. Then it’s time for the final step as doors are installed on each of the sheds.

The completed sheds are revealed for their final evaluation. Which of them will fit through the warehouse door? Everything comes to a head as this season’s Worst Handyman is named, once and for all.

The eco sheds have been auctioned off on eBay, with the profits destined for Habitat for Humanity – thankfully sold sight unseen! In this final episode, see the results of the handymen’s horrible work. The sheds – or what’s left of them – are delivered to the lucky purchasers.