Adoctor'swifetiresofhisobsessionwithmodeltrains,andspendsherdayswonderingaboutthesonshegaveupforadoptionatbirth.Whileeatingataroadsidecafe,sheencountersaBritishhitchhiker,whoturnsouttobeherson.Theyspendtimetogethertryingtofindabond.Thesonbeginstohatethehusband,andthewifebeginsworryingaboutthesafetyofherhusband...