A Boat to nowhere - setting

This book takes place in the Vietnamese village, sea, thailand, and the island named Out cast. First in the book it takes place in the village. the characters were lived in the village but when the Kien and the three strangers came to the village, their life changed. Kien, Mai, Loc, and the Grandfather ran away from the strangers. they went to the Thailand but the people in the land didn't want them to stay. So the four of them came to the middle of the ocean, again.