Amid a crushing series of setbacks, Alex explores the possibility of college while dealing with Paula’s health crisis and offering Regina a helping hand.

Zoey tries to “choose happiness” but finds it is easier said than done. David re-evaluates his priorities. Mo and Max face their first real challenge as business partners.

Maggie and Gary explore the possibility of a home birth, while Regina and Rome adjust to life with their new roommate. Katherine and Greta reach a crossroads in their relationship.

Ryn discovers a refuge of injured mermaids that escaped Tia’s violent takeover. Ben and Xander get caught in a battle with Tia’s troops. Maddie feeds Robb half-truths to secure his…

Oliver tries to track down Thea in Corto Maltese as Diggle searches for a missing field operative. Meanwhile, Felicity adapts to her new job.