[1] It aired on SBS from April 5 to June 15, 2014, on Saturdays and Sundays at 21:55 (KST) for 20 episodes.

[2] Yoon Soo-wan (Ku Hye-sun) and Park Dong-joo (Lee Sang-yoon) were each other's first loves,[3] but they were forced to separate due to painful family circumstances.

Soo-wan, who had been blind, eventually undergoes an eye transplant surgery that restores her sight.

Twelve years later, Soo-wan now works as an emergency rescue worker, while Dong-joo is a surgeon.

They meet each other again, but Soo-wan is engaged to a neurosurgeon, Kang Ji-woon (Kim Ji-seok).