He works part-time at a guest house and invests in cryptocurrency. She, a long-term guest, helps him through her online broadcasting. She puts all in cryptocurrency and expects ten times return. The day finally comes, and the end is provocative. Korea is one of the four largest markets in the world for cryptocurrency trades. Young people led the investment boom by getting loans and investing more than they could. The director's critical eyes are on the code of the mind. Why do young people not mind taking such risks? (KANG Jee-iee)