朵儿和蔷儿是一对姐妹花，她们十分喜欢甜点和咖啡，于是朵儿便利用工作存款和家人的资助与妹妹蔷儿打造了一个温馨的咖啡馆。朵儿认为自己的好人缘就是这个咖啡店的招牌，她的好朋友会带着其他好朋友一起过来，这样店里的生意就会一直很好。开业这天朵儿的好朋友们都带着贺礼来捧场，朵儿高兴的觉得要把这个咖啡馆长长久久的开下去。开店之后的几天让人大失所望，几乎没有客人能来喝咖啡，这和仓库里面满满的贺礼形成反差。

一次偶然的机会，朵儿和蔷儿在咖啡馆开启了一场以物易物的活动，大家可以拿着其他的东西来到咖啡馆交换，但是咖啡却一定要用金钱。客人可以用清水沟换取一套泰文食谱，也可以用一个公仔交换一个老相片，以物易物不论实际的价格而是物品的价值，这吸引了一波又一波的客人。

Duo'er and Qiang'er are a pair of sisters, they like dessert and coffee very much, so Duo'er uses work savings and family support to meet with her younger sister Qiang'er built a warm cafe. Duoer thinks that her good popularity is the sign of this coffee shop, and her good friends will bring other good friends to come here, so that the business in the shop will always be good. On the opening day, Duo'er's good friends all brought congratulatory gifts to join her. Duo'er was very happy and felt that she wanted to keep this cafe open for a long time. The few days after the opening of the store was a big disappointment, almost no customers could come to drink coffee, which was in contrast to the full of congratulatory gifts in the warehouse

By chance, Duo'er and Qiang'er started a barter activity in the cafe, everyone can get You can come to the cafe to exchange other things, but you must use money for coffee. Guests can exchange clear water ditch for a set of Thai recipes, or exchange a doll for an old photo. Bartering is not about the actual price but the value of the item, which has attracted wave after wave of guests.