故事的主人公是一个girl,她的名字叫Tiffany
她现在有29只cats,as always ,she has a problem,she needed one more cat,she wantto have 30 cats,she want a special cat,a purple cat,紫色的猫当然我们很少见了，而且Tiffany自己家里有的那29只猫，都是common colour，像black，brown，white所以她就想有一只特别颜色的猫，但是问题是这个颜色的猫非常地贵，有多贵呢$125000000,对于Tiffany来说是一笔不小的开销，所以Tiffany想要买这种颜色的猫，第一步是要解决money的问题.
she set aside money everyday，she eat a little bit,不再乱花钱了，
she would use that moneyfor any reason,she saved a lot money everyday,finally she saved enough money，she was very excited,she went to the pet store,
但是告诉她已经卖完了，Tiffany was very very upset,距离她要买到心心念念的紫色的猫就差最后这一步了，但是Tiffany 没有放弃，she sprinted across the city to annother petstore to buy a purple cat,when she arrived the pet store,she said "I wanta purple cat,I need a purple cat ,但是bad news,他们的店也卖完了，there is no purple cat in the city,so Tiffany cried 27days and 5h,almost a month,
After these days later,she relinauished her dream of gettinga purple cat,她放弃了买purple cat的想法，she decided"I don't need a purple cat I guess",最后她买了一只happy,little,pinkcat,she also had 30 cats,they were very happy,They lived happliy together.故事以一个happy ending结束了。