'29 Grams' is a short web drama that focuses on characters active on Instagram and tells stories about the lives and loves of celebrities on social media. Actress Song Ji-hyo will play the role of Yeon Yu-jin, the main character, and in addition to Song Ji-hyo, actors Seo-rina and Lee Il-hyun will appear, showing the life, fashion, beauty, and love stories of SNS goddesses.