Kim Joo Sung is the Team Leader of the BS Project, an undertaking of BS Electronics aiming to create a software for love, and is himself in love with co-worker Oh Bong Soon.

Joo Sung senses that something is off about Bong Soon at the hospital.

Joo Sung remembers Bong Soon's origin, and learns that his illness is progressing quicker than he thought.

Angry at Joo Sung's reaction the night before, Bong Soon realizes she's developed feelings for him.

Joo Sung and Bong Soon go on a date.

Director Byun tells Joon Sung that he's brought back an old friend to replace him.