A trip to Napa concludes with tensions at a high. Back in the OC, Vicki and Brooks consider some unconventional cancer treatments, Meghan puts the final touches on her first OC charity event while Heather faces the harsh reality of going over budget on her dream home. Meanwhile, Shannon receives some shocking news and unresolved issues between her and Meghan become the topic of the ladies' scrutiny at Meghan's JDRF charity event.