En route to America, Irish immigrant Arleen Whelan is the victim of shipboard masher Raymond Walburn. Pushed away by the girl, Walburn is slightly injured, whereupon he brings up charges against Whelan and holds up her entry visa at Ellis Island. War correspondent Don Ameche comes to the rescue, but Whelan's problems are far from over thanks to her involvement with another immigrant, gangster Gilbert Roland. Gateway represents perhaps the best screen opportunity for 20th Century-Fox starlet Arleen Whelan, who faded from prominence in the 1940s. Other than that, the film is an intriguing glimpse of immigration procedures in the prewar years.