After the field narrows to 16, the boys arrive in Miami for vocal coaching. Their harmonies give Simon goosebumps, but four singers just aren't ready.

A singer gets a warning. The pressure rises as Simon looks for passion and chemistry. Can the boys prove their vocal prowess in the studio?

As Simon takes a final look at the band, he faces an impossible choice. After his shocking decision, it's time for a label meeting — and the future.