Plot: Donald and Douglas reveal that they have built an upgrade for all the students bionics, except for Leo's. But the upgrade doesn't work on Adam, Bree, and Chase because their systems are older

Lab Rats - Season 4 - The Vanishing (1) (Episode 23)
Episode Aired On:
Wednesday, February 3 2016
9 years ago
Wednesday, February 3 2016
9 years ago