After the Bird-Kersee's are mugged, they become panicked about safety while living on Earth, so Debbie and Marty attempt to teach them how to protect themselves, and Larry decides to build a Panic Room... in Marty and Debbie's bedroom. Meanwhile, when Jane intrudes on a date night for Amber and Reggie, he must decide, once and for all, which girl he wants to be with.

Debbie struggles with going back to school and the advances of a flirtatious professor, while Marty is at home with Amber, mourning her relationship with Reggie. Meanwhile, Larry & Reggie are emotional wrecks as their Zabvronian male cycles have synchronized, and Dick is going through the "terrible tens".