As Nathan (James Lafferty) and Haley (Bethany Joy Galeotti) prepare for the family's move to Barcelona, Brook (Sophia Bush) struggles to accept Julian's (Austin Nichols) reaction to Alex's (guest star Jana Kramer) crisis. Quinn (Shantel VanSanten) helps Clay (Robert Buckley) hatch a plan to win back Nathan as a client. Meanwhile, Millie's (Lisa Goldstein) downward spiral puts her and Mouth (Lee Norris) at a crossroads, and Dan Scott's (Paul Johannson) pronouncement shocks Rachel (guest star Danneel Harris) and his audience.