Davenport's time machine brings Leo, from seven years in the future, to present day to prevent Adam, Bree and Chase from going on a mission from which they'll never return. Davenport takes the warning seriously and forbids the Lab Rats from going on the mission, but they decide to sacrifice themselves in hopes of saving the world. Meanwhile, future Leo teaches present day Leo how to be cool and shows Davenport his fate. (thetvdb.com)