Eloise Kolby leaves her hometown of Chicago and arrives in 1950s Hollywood with dreams of becoming a movie star. While waiting for her big break, she falls for charming script-writer Ross Wilson. But when Ross promises her a big surprise, it's not a ring, but a new project on location in Italy—for him alone. He asks her to look into a house he inherited in a small desert town outside LA, putting her dreams on hold.

Ridgecrest Postman Victor Burnham has always wanted to buy the property on Ivy Lane. But from the moment the beautiful, mysterious blonde moves into "his" house, his life becomes complicated. Their daily rendezvous at the mailbox has tongues wagging, and Victor longing to share his dream house.

When Eloise's long-awaited letter arrives, signaling Ross's return, she must choose—her new life on Ivy Lane with a steadfast postman and the promise of a family or the allure of fame and Hollywood glamour. Whose heart will be stamped Return to Sender?