The DIY couples start a new week by filling the waste container. However, Frank and Lotty had already done this after the completion of the living room, and Menno decides to confront the couple about this transgression. This puts a strain on the relationship between the couples. On the advice of construction supervisor Heiko, the DIY couples trade materials with each other, but communication between Sonja and Hendrik and downstairs neighbors Patrick and Marloes does not run smoothly.