Kathryn becomes nostalgic when she realizes that it's been five years since the switch was discovered and the two families started living together. As she searches for memories, Kathryn discovers a long buried family secret – stretching all the way back to the switch – that changes everything. Daphne competes against Mingo for a six-week paid internship in sports medicine. Bay is celebrated for her tattoo work in a magazine spread, but her struggle to prove herself as an artist to John threatens to destroy their relationship. Toby meets Amelia, a young woman with Down Syndrome who changes his perception about his son's future. Melody, Emmett and Travis make some major decisions about their lives, and Regina takes a chance on love.