For three years, Andrew Paxton has slaved as the assistant to Margaret Tate, hard-driving editor at a New York publisher. When Margaret, a Canadian, faces deportation for an expired visa, she hatches a scheme to marry Andrew, and he agrees if she will promise him a promotion. A skeptical INS agent vows to test the couple about each other the next Monday. Andrew had plans to fly home that weekend for his grandma's 90th, so Margaret goes with him--to Sitka, Alaska, where Mom, Dad, and Grandma await. Family dynamics take over: tensions between Andrew and his dad, an ex-girlfriend, Andrew's dislike of Margaret, and Margaret's past color the next few days, with the INS ready to charge Andrew with fraud.—