What does the cryptic crossword clue "Spies with foreign plot involved have accents (10)" mean?

The wordplay uses an anagram. anagram of PLOT (synonym="PLOT") + SIGHTS (synonym="SIGHTS") = SPOTLIGHTS The answer is SPOTLIGHTS.

Spies with foreign plot involved have accents (10)

Guardian Cryptic #29366 | 6 Down | 2024-04-25 flower