Where Or When And What

There is a template that covers a lot of sf. Someone arrives somewhere or when, then has to cope with whatever they find there or then:

Cavor and Bedford arrive on the Moon and have to cope with Selenities;

the Time Traveller arrives in 802,701 AD and has to cope with Morlocks and Eloi;

Enterprise crew members beam down to the surface of a terrestroid planet and must cope with a strange new civilization;

Wanda Tamberly of the Time Patrol appears at the intended longitude and latitude at what should be a particular local time and date in 1989 AD and sees Nob Hill, Russian Hill and Twin Peaks but without any buildings or television tower...

Of these, Wanda's arrival point is by far the strangest - an astonishing mixture of the familiar and the unexpected.