to buy a story

To buy a story
باور کردنِ یه داستان

* To buy an idea : باور کردنِ یه ایده
To buy an explanation : باور کردنِ یه توضیح
To buy something : باور کردن چیزی

When we use the phrase to buy� a� story� it means that we accept that then story �is true, we have confidence in it.
( The idiom to� buy� a� story �is informal English. )