Sibling rivalry rears its ugly head when Penelope's brother, who can do no wrong in their mother's eyes, shows up during a family getaway to San Diego.

Penelope catches Alex smoking pot at a concert. When Lydia develops a cough at the opera, she tries Dr. B's special lozenges.

Rain ruins Valentine's Day plans, causing more than one couple to have their first fight. Schneider tries to hide his wealthy background from Avery.