After Lily worries about Ted's motives in giving Robin's locket back, Ted and Lily attempt to go on a road trip from Manhattan to Farhampton. However, Ted's endless facts drive Lily only to the train station, where Lily gets to meet Ted's future children's mother. Marshall flies home with Daphne only to have his mother announce his judgeship on Facebook before Lily hears it from him first. Robin and Barney go through their wedding invite list to discover they've invited every disruptive family member possible, and possibly one that they have in common...