Yat is not happy with his parents, so he plans to move away from home after getting enough money. Yat sells wastes and engages in street performances with Hei. Hei spends all the money on video games, and this turns their friendship sour. When Hei feels bad and plans to apologize, Yat already leaves Hong Kong with his mother. A few years later...阿一與阿曦互贈生日禮物，阿曦得到手繪波鞋，阿一得到「潘朵拉盒子」。阿一因不滿父母，相約阿曦以變賣廢物和街頭表演來賺取金錢，企圖離家出走。阿曦隱瞞阿一，把辛苦膁來的錢買下電子遊戲機，兩人因此絕交。阿曦後悔不已，他穿上手繪波鞋找阿一道歉，可惜為時已晚，阿一已隨母親離開香港！若干年後……
