Plot summary
As Valentine's Day approaches, Scorpion must search for stolen experimental shoulder-launch rockets that are being transported aboard a luxury cruise ship, and identify the arms dealer who is transporting them and targeting the one percenters aboard. Meanwhile, Happy and Toby help Ralph awe his first crush and Sylvester makes a valentine for Megan. Also, Walter plans to take Paige out to a top L.A. restaurant, but cancels after the mission.
Credits
Adapted from Wikipedia contributors, List of Scorpion episodes. HTML formatting and reference markers removed.