Heroes visit exotic place where somebody's relative is an explorer. They find out that the person has been kidnapped and have to save them.
The first two Cluefinders PC games followed this format. As well as numerous TV episodes.

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"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek
"Carl Sagan sent a message to ET,
Neil Armstrong walked in the Sea of Tranquility
Steve Squyers built Spirit and Opportunity
Dan Haylen upchucked in zero gravity." -Brent Simon, The Space Camp Song