Recently engaged couple Nick Lachey and Vanessa Minnillo plan to stock up on sunscreen and banish the winter blues by shooting an upcoming episode -- featuring pirates! -- of CBS' 'Hawaii Five-O.'

The 'Sing-Off' host, 37, and his bride-to-be, 30, will play an engaged couple, according to People.com. (The real-life fiances just returned home to California from a holiday getaway in Italy, where they vacationed with Drew Lachey, Nick's younger brother and former 98 Degrees bandmate, and his wife.) Minnillo will portray a woman who works as a deckhand on a cruise boat that's taken hostage by pirates.

Lachey, meanwhile, may be hoping his concentration won't be taken hostage by old memories: He proposed to first wife Jessica Simpson on a boat off the coast of Hawaii back in 2002, and even shared footage of the romantic moment on the couple's reality series 'Newyweds.'