It is the third installment of season-themed tetralogy Endless Love drama series directed by Yoon Seok-ho.

Shim Hye-won (Son Ye-jin) has suffered from a possibly fatal heart disease ever since childhood.

Suffering from the pain of losing his girlfriend, Min-woo goes to Italy to study, with the memories of Eun-hye still lingering in his heart.

Jung-jae's younger sister, Park Jung-ah (Han Ji-hye) meets Min-woo in Italy and falls for him.

Coincidentally, Min-woo ends up being hired as the art director for Jung-jae's project "Summer Scent," with Hye-won as their florist.

Soon, Hye-won wakes up and a deeply angered Jung-jae forbids Min-woo to see her, ordering him to leave on the spot.

Three years later, with memories of Hye-won in his heart, Min-woo returns to Korea as the manager of an Art Centre.