Let's Eat depicts the daily life and romance of a single woman and a murder case occurs in her neighborhood. Lee Soo Kyung is a 33-year-old single woman. She divorced when she was in her 20's and now lives alone. She always wants to carry herself with dignity, but she loses self-control when she is near gourmet foods. Koo Dae Young is a gourmet, especially talented with describing the taste of foods. He often lies when he opens his mouth, but he is usually considerate to others.
Four single people: happily divorced paralegal Lee Soo-kyung (Lee Soo-kyung), mysterious gourmand Goo Dae-young (Yoon Doo-joon), design student and former rich girl Yoon Jin-yi (Yoon So-hee), and petty lawyer Kim Hak-moon (Shim Hyung-tak). Who enjoy living alone, except for that pesky problem that dining out is not designed for one. At Jin-yi's request, she, Soo-kyung and Dae-young start eating out together and thus get involved in each other's lives.