Kwon Jiyong and Lee Seunghyun, best friends even before they understood what relationship means. Sacrifice, support, care and understanding defines their friendship. Their friendship was such that they became the walking, living reference of what friendship and friends meant. But in their dictionary of life which was full with emotions of friendship, will they be able to recognise that one emotion underlying the foundation of all their emotions? Will they be able to find that one word and one feeling called love?