The Harrises return to 10,000 B.C., determined to upload avirus that will stop all sinkholes, despite knowing that thiswill mean they will never get home again. An unlikely leaderrallies the clearing to face an oncoming prehistoric threat.
Reynolds finds himself caught between a chance for love and anopportunity to spend precious time with his father. Realizingthe consequences of her actions, Bloom makes an unexpectedmove forward with her sister. Max helps an ICU internstruggling with the loss of a patient. Dr. Wilder receives anoffer that forces her to choose between her community and hercareer.
After a father and daughter are kidnapped on Thanksgiving, theteam discovers a hostage situation involving police deputies.When the gunmen offer an exchange for the hostages, Simone issent undercover by Garza, and Lopez arrives to help rescueWesley. Meanwhile, Laura and Brendon search for a nanny camthat could reveal the identity of the kidnapper.
There's great excitement as Colin introduces the neighbours tohis new partner, Anne Marie. But the gang are quickly takenaback by her enthusiastic approach to the dinner party.
While searching for a missing scientist in the Angeles NationalForest, Simone and Carter uncover an eco-terrorist's plans todetonate dirty bombs across the city. Meanwhile, Brendon tapsinto his own profiling tactics to find the perfect birthdaygift for Laura.
Alba and her ex-husband's girlfriend Batty prepare for guestswhen criminals storm into the house after a botched heist;unable to cancel plans, they must sit through an awkwardevening.