YING and SIDNG dare not to face each other. Both of them try to avoid each other. YEE invites the schoolmates to celebrate YUET's birthday. HO and YEE find that YING and SIDNG are very strange. YING and SIDNG ask YEE and HO to help respectively. SIDNG copes with his colleagues well. He even receives praises. YING inspires SIDNG to use musical notes to decorate the window display. SIDNG and his colleagues work overnight. CHUNG, PING, YING and SIDNG's schoolmates work hard at home. They eventually finish the work and receive praise. SIDNG continue to work at the firm at six months. SIDNG thanks everybody by inviting them to dinner. When SIDNG has known that YING had secretly rendered help, he fills with emotion. Meanwhile, LEUNG appears.