Plec reaffirmed that Elena (Nina Dobrev) will choose between Damon (Ian Somerhalder) and Stefan (Paul Wesley) after her relationship with each brother is explored over the remaining four episodes.
"[Viewers see] where Elena stands with each of these brothers and where their relationship, both as a love triangle and as people who have been through a lot together, all stand," she told E!.
"There's a lot of romantic moments coming up on both sides and there's some heartbreak coming up on both sides."
Plec added that she hoped viewers would appreciate how Elena needs time to "figure out" her circumstances.
The exec said: "I hope what people see when all is said and done is we're really trying to let Elena figure out where she is in her life - who she is and what she wants and who she wants - to let her honestly and truthfully make that decision for herself."
Plec confirmed this week that work has begun on a fourth season of Vampire Diaries, even though it has yet to be renewed.
The show continues Thursdays at 8/7c on The CW. It airs on Tuesdays at 9pm on ITV2 in the UK.
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