Gu dowon kini menjadi fellow spesialis Obstetri di Rumah Sakit Yulje. Hari-harinya sekarang dipenuhi jadwal yang padat, riset, serta membimbing para junior. Tapi di rumah, ia hanya punya satu prioritas utama: istrinya, Oh Yiyoung. Oh Yiyoung adalah dokter residen tahun kedua Obgyn bersama Pyo Namkyung, Kim Sabi, dan Um Jaeil, selalu menantikan momen kecil bersama Dowon di tengah kesibukan mereka masing-masing. Meski sering pulang larut dan lelah, mereka mencoba menjaga kehangatan rumah tangga dengan panggilan manis dan kebiasaan sederhana.

In the high-stakes world of medicine, two OBGYN residents at Yulje Medical Center, Oh Yi Young and Gu Do Won, find themselves caught between duty and desire. Despite their undeniable chemistry, Yi Young, a brilliant but emotionally reserved first-year, struggles to see Do Won as anything more than a colleague. But when family ties and unspoken feelings blur the lines, the hospital becomes a place not only for saving lives, but for healing hearts. As Yi Young and Do Won navigate their intense careers and forbidden love, will they give in to the passion growing between them-or let their professional dreams pull them apart? (This story is inspired by the K-drama "Resident Playbook")