David unexpectedly shows up for Harris' birthday after being absent for years, forcing Darlene to re-examine their relationship and the rest of the family. Meanwhile, Bev temporarily moves into the Conner home after an incident at the nursing home prevents her from returning.

The Conners can't pay their Wi-Fi bill, so they befriend their new neighbors to use the internet for Mary to Skype with mom Geena, who is stationed in Afghanistan. Meanwhile, Dan loses an important job and D.J. admits post-military life has been hard, so they come up with a plan to make extra money.