Complex sentence: The 2008 Stanley Cup Finals was the best-of-seven NHL championship series of the 2008 Stanley Cup playoffs contested between the Western Conference champion Detroit Red Wings and the Eastern Conference champion Pittsburgh Penguins.
Split into simpler sentences: The 2008 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 2007--08 season, and the culmination of the 2008 Stanley Cup playoffs. It was contested between the Western Conference champion Detroit Red Wings and the Eastern Conference champion Pittsburgh Penguins.