In this last episode before the Grand Finale, the four remaining teams combine everything they’ve learned so far. In Challenge One the teams must mount a water heater, a task that requires both plumbing and electrical skills. Challenge Two has them building a cocktail bar and cutting a custom copper top for its surface. But just when they think it’s cocktail hour, a plot twist: there’s another elimination and just three teams remain. The final three couples must then complete Challenge Three, a project of their own choosing to impress Canada.