When Vanessa is featured in a local magazine article about entrepreneurs under 40 years old, a jealous Kevin tries to get attention for himself. Also, Chale fixes up Kyle on a date with his wild Aunt Kristin.

When Chloe and Lucifer's investigation into the murder of a diamond thief points to one of Ella's brothers as the main suspect, Ella is driven to prove her brother's innocence and recruits an unlikely ally. Meanwhile, Linda is upset when Charlotte comes to her for help and Detective Pierce hashes out his issues with Amenadiel.

When Adam and Andi agree on a present-free Valentine’s Day, Adam gives the gift he planned for Andi to his mother instead,

On Valentine's Day, Team Scorpion must set aside their romantic plans to help a doctor and pilot trapped inside a helicopter that crashed atop a skyscraper. Toby and Happy wait for news on their fertility results. Sylvester realizes that he may have feelings for Florence.

The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in the hopes of finding out how to defeat Reign. However, Purity escapes and attacks the city’s subway tunnels. Meanwhile, J’onn, Winn and Mon-El band together to fix the Legion ship.

Innovative evidence leads the team to discover a crucial element in the case has gone missing. Kreizler and Moore interview a witness to find out what happened to Moore at the Brothel. Sara attempts to live in a world outside the investigation. Kreizler challenges them to look within themselves.

In Paris, Lauren B. and Arie are whisked away on a luxury speed boat down the Seine River and then tour the city's tourist attractions. Arie also surprises a group of the women with a visit to the legendary dance hall, Moulin Rouge. Krystal and Kendall face off during a two-on-one date that ends with a romantic kiss at the top of the Eiffel Tower for one woman. The final date goes to Jacqueline, but a clash in lifestyles might be a deal breaker for Arie.

Shaun is surprised to learn that his young cancer patient identifies as a girl while being biologically male. He must quickly learn to understand his patient, her medical needs and how to work with her family, who all feel they know what is best for her.