At the beginning of every week the students at Taeyeon’s school all compete to see who can make the best coffee, for one girl that remains a mystery. The senior doesn’t understand the hype of making their own coffee for another person. After investigating, Taeyeon finally discovers that the girl, Jessica Jung will date whoever makes the best coffee for her until her taste bud is finally normal Jessica believes once the caffeine is purely gone from her taste bud, so is the person. At least, that’s how it has worked so far. The reason? It’s all for Jessica Jung to find the one she loves.