Heidi Klum and Tim Gunn give the 10 remaining designers their toughest assignment yet - a collaboration. In teams of two, the designers must blend their individual aesthetics into a 3-look collection for a runway show on the banks of the River Seine. One designer struggles to overcome a teammate's costly mistake, while another pair's creative conflict threatens to sink their partnership.

The designers pack their bags and head to Tokyo. Once they arrive, their assignment is to create a two-look streetwear collection. As one designer struggles to step out of their comfort zone, another designer looks to the local workers for inspiration..