A Swedish family gathers on an island as their father, David (Gunnar Björnstrand), returns from a long stay in Switzerland, where he claimed to be working on his book. The group includes his daughter Karin (Harriet Andersson) and her physician husband Martin (Max von Sydow), plus his teenage son Minus (Lars Passgård). It’s immediately apparent that the family is struggling; they desire to present as a typical, suppor…