Shane Blades

Sheldon and Amy host a special live Valentine's Day episode of "Fun with Flags." While Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub; and Raj is torn between Emily and the cute girl he met at the Comic Book Store.

While at a lunch seeking Pruitt's blessing for their relationship, Andy and Sullivan jump into action when immigration officials raid the restaurant; Travis gets roped into an awkward lunch with Chief Dixon, Emmett and Emmett's girlfriend.

The crew battles a storage facility fire with growing complications; Dr. Jackson Avery pops over from Grey Sloan and ends up collaborating with old pal Ben Warren.