Han Xiao accidentally joined the country's top secret service organization and became a new undercover agent with frequent problems. The team led by Lin Na battled wits and courage in several global crises, from recruit training with frequent oolongs, to the enemy organization "Night Walk" that revealed hidden secrets, to the entanglement of emotions and trust among team members. The three-volume story contains suspenseful reasoning and exciting action, but is also interspersed with humor, friendship and growth. In the end, everyone works together to crush the transnational crisis, and Han Xiao also grows into a top agent in the true sense amidst the noise and crisis. The plots of the whole book are intertwined, with laughter and tears, constant thrills, and a successful ending.
