Marcus and Douglas lure the Lab Rats into a trap and they learn shocking revelations about their secret origins and creator. Leo partners with Eddy for a surprise attack on Douglas' lair resulting in an epic bionic showdown.

After coming home with a poor report card, Leo uses Davenport's award-winning memory erasing device to wipe Davenport's short term memory but inadvertently erases 25 years, rendering him a teenager.