Story:
JJ has to deal with the aftermath of her time in Afghanistan & her abduction by Askari.
During her time in Afghanistan she not only meets Hastings and Askari but also a soldier, Liam. She and Liam are falling in love but both of them aren't ready to admit it to themselves (and each other). Meanwhile Hotch finds out that JJ's transfer hits him harder than he could've imagined. When JJ returns to the BAU she's changed. And after she's been taken by Askari (ep.200) she has to deal with all the traumas.
When Liam unexpectedly shows up, it turns everything upside down. Liam notices that she's far from fine, but JJ is holding something back from him. Finally she tells him that during their time in Afghanistan she was pregnant, but because of one of Askari's traps, she'd lost their baby.
Both being shattered and destroyed, they think about what could've been.
In the meantime Hotch realizes his true feelings for JJ. It hurts him to see JJ recandle her relation with Liam, but in the end he wants whats best for her. He guides her on to the right path.