However, the world's top ranked team took over after the restart.
A powerful but mobile tight five, strong, ball-carrying loose forwards, tactical genius in the halves, defensive strength in midfield and swift finishers in the back three: England have the full package.
Their rolling maul from lineouts especially was devastating.
Tries to Amy Cokayne and Zoe Aldcroft within five minutes of the restart blew the game wide open, before a double through Lydia Thompson and MacDonald's second try of the match saw England take full control with just over 20 minutes left to play.
At that point, Fiji could do little to stop the rolling English attack and while Fiji did add to their score with a consolation try in the dying stages, the tournament favourites got their campaign off by making a big statement.
"We were more composed in the second half," England captain Sarah Hunter said. "We went back to being England and managed to put in a good performance."
- With AP