Shin Hye, Mi Yeon, and Hae Young are three vivacious women who help each other through the tangles of their romantic lives, from tentative first dates to Viagra-taking husbands and one-night stands. Being 40 proves that they're not past their prime.
| Directing | Kwon Chil-in | Director |
| Production | Lee Eun | Producer |
| Writing | Lee Su-a | Screenplay |
| Production | Shim Jae-myung | Producer |
| Sound | Park In-young | Original Music Composer |
| Art | Lee Mok-won | Production Design |
| Production | Lee Chi-beom | Line Producer |
| Camera | Lee Hyung-deok | Director of Photography |
| Sound | Kim Suk-won | Sound Supervisor |
| Costume & Make-Up | Jang Joo-hee | Costume Design |
| Editing | Kim Jae-beom | Editor |
| Editing | Kim Sang-bum | Editor |
| Production | Jeong Won-chan | Producer |
| Art | Jin Hye-jung | Art Direction |
| Production | Lee Min-su | Production Supervisor |
| Lighting | Park Cheong-woo | Lighting Director |
| Crew | Choi Seong-kyum | Martial Arts Choreographer |
| Sound | Kim Kyoung-ho | Production Sound Mixer |
| Camera | Yoon Yeong-soo | Director of Photography |
