Hurricanes forward Sebastian Aho tipped defenseman Jaccob Slavin's shot to win the game 1:06 into overtime. Predators goalie Juuse Saros made 27 saves on 31 shots.
"Full marks to Nashville," Carolina coach Rod Brind'Amour said. "That's a great team. No weaknesses in that group. All the games were tight."
For the second consecutive game, the Predators couldn't hold a one-goal lead in the third period. Hurricanes defenseman Dougie Hamilton tied it at 3-3 with 6:01 remaining.
"They turned it up, for sure," Johansen said. "But I think it was probably a little more on us and how we sat back and didn't have enough poise to continue to make plays and have the pace we were having there in the second period, especially. That's what we wanted to get back to in overtime, and obviously they scored early. They're a great hockey team, they did some good things in the third to tie it up and win it in OT."