Well, 'keep sweet' could be about staying in a good mood or being kind. 'Pray' is often related to seeking guidance or giving thanks in a religious sense. 'Obey' is simply about adhering to something. Maybe it's a story about a person or a group who followed these principles in their life. However, without knowing the exact story, it's just speculation.
I'm not entirely sure which specific 'true story' this refers to. 'Keep sweet' might imply maintaining a positive or pleasant attitude. 'Pray' is an act of religious or spiritual communication. 'Obey' could mean following rules or commands. But without more context, it's hard to be more precise.
The phrase 'keep sweet pray and obey' seems to suggest a set of behaviors or values. 'Keep sweet' may be about having a sweet disposition, like being friendly and approachable. 'Pray' is self - explanatory in a religious context. 'Obey' implies following a set of moral, religious, or social norms. The 'true story' part is a mystery. It could be a story of a community where these values were highly regarded, perhaps in a religious or traditional setting. Maybe it was about how these principles helped someone overcome difficulties or guided their life choices. But again, without further details, we can only guess.