Hyeon-jae (played by Kang Gil-woo) is a mild-mannered botanist. So mild is his manner, that we are first introduced to him walking the street, and rescuing an abandoned potted plant. Hyeon-jae goes back to his shop, and narrates the basics of what kind of plant it is and how he's planning to rescue it. "Plant Cafe, Warmth" then goes on to feature Hyeon-jae assisting customers in vignettes where the condition of plants is related to the condition of people, Little Forest, Plant Cafe, Warmth, Choi Chang-hwan-I, Kang Gil-woo, Kim Woo-kyum, Lee Ga-kyung, Park Soo-yeon, Seo Seok-kyu