The TARDIS arrives on Earth in a new ice age. The travellers make their way into a base where scientists, commanded by Leader Clent, are using an ioniser device to combat the advance of a glacier.
1962
2004
1999
2002
2001
1968
2025
2016
1997
1985
1995
2011
2015
1991
2003
1989
1986
1990
1996