Bianca and Silvio pay no attention to their dwindling budget and cheerfully continue building, even though their living room won't meet the deadline. The other couples are fighting hard for the win and employing a new tactic: catching each other making mistakes that result in hefty fines. Consequently, the joint lunch is anything but pleasant. Only Bianca and Silvio seem to be enjoying it, until everything takes a turn the next day due to an unexpected setback. Something has been stolen from the bicycle shed. Due to a lack of time and money, several couples are struggling, and even the construction management loses confidence.