Sophie and Ryan damage the Moon Pool in their efforts to obtain the rare crystals. The girls improvise and use their own magic to prevent the impact of the comet and a planet wide catastrophe. Rikki, Cleo and Bella graduate with a surprise.
Cleo discovers a comet is causing fish to flee the waters around Mako Island. The girls find a way to restart the message in the Moon Pool and discover the comet will collide with earth. Sophie meets Ryan and with Zane's help they join forces to remove the crystals from the Moon Pool.
Now firmly in control again, Col. Young and the other military personnel try to find a way to live with the civilians who tried to take control of the ship. When the Destiny prematurely drops out of FTL due to a computer glitch, they find both a sun and an Earth-like planet that should not be there. Rush concludes that the entire system was created by an alien race that is far beyond their imaginations. With the ship malfunctioning and a month's worth of repairs before it can jump again, several of the military and civilians decide to spend time on the planet. Hard feelings from the mutiny persist and it's an opportunity for everyone to mend fences. When the time comes to return to the Destiny, several of them decide they want to stay on the planet. Young is prepared to let them stay, but he imposes severe conditions.
The team members notice parallels between the victims of a wedding party that is rushed to the emergency room and themselves; the hospital staff notices Zambrano and Deleo are flirting with each other.
Lucretia and Batiatus await the arrival of Glaber with the intentions to receive his patronage, while Spartacus focuses his attention on his plan for revenge.
Alex, Justin and Max are shocked to discover that international music sensation Shakira is actually their Uncle Kelbo, who has been abusing one of the Main Eleven Wizards Rules.
Each of the remaining designers is given four months and $9000 to design a 10-piece collection for Fashion Week. In the interim, each gets a special visit in their hometown from Tim Gunn. Back in New York, two designers must compete head-to-head for the last spot in the finale.
When the passengers on a commuter train all die instantly of massive power loss, the team realizes that a time traveler is responsible... and that it may be impossible to apprehend him. Meanwhile, Walter writes a letter to Peter explaining his origins.
Convinced that a women's alliance is running the Villains tribe, The Heroes develop a risky strategy in an effort to align themselves with one of the game's most notorious players.
Dean begins to think the only way to stop Lucifer is to say yes to Michael, but the angels decide they don't need him anymore. Dean, Sam, and Castiel are horrified at the angels' new game plan and take on Zachariah to prevent an all out war on Earth. Meanwhile, a familiar face returns.
While Stefan struggles to control his new situation, Elena and Jeremy are surprised by a visit from their uncle, John Gilbert. Alaric has an awkward talk with Elena about Isobel. At a Founder’s Day event, Stefan displays a rare party attitude and Damon’s attempt to find out why Uncle John has returned to town takes an ugly turn. An incident at the party causes trouble between Matt and Tyler... and the relationship between Matt and his mother, Kelly, reaches a new low. Meanwhile, Elena’s effort to comfort Jeremy falls short and he decides to take matters into his own hands.
The crew of HMAS Hammersley uncovers a terrorist plot to assassinate a senior US official. Kate has doubts about Hammersley's popular new crewmate, a war hero with a dark secret. Mike resists a promotion to Navcom, even though it would allow him and Kate to pursue their relationship.
Demetri decides to put a rush on his wedding plans with Zoey when the captured FBI mole confirms the date of his prophesized murder. Meanwhile, Wedeck tries to help Aaron infiltrate Jericho in order to rescue Tracy.
When a band comes to town, but Kahuna isn't around to drive them, the groms and Johnny take the Whale Bus themselves to get them there. Meanwhile, Bummer discovers the groms have ditched work and makes it his personal mission to track them down.
When Mum finds an inappropriate image on the family computer, an investigation begins.
The team’s latest case takes Brennan back to her alma mater, Burtonsville High School, where she and Booth investigate the discovery of an unidentified skull and upper torso. With Angela’s help, they identify the victim as one of Brennan’s classmates, and notice a possible connection to a second murder committed 15 years prior. Brennan and Booth go undercover as a married couple at her class reunion to interrogate a set of suspects, where even as an adult, Brennan is still predictably misunderstood and her only friend lies in a strangely dark and offbeat janitor. Meanwhile, Hodgins spills a lab secret
Socialite and single mom Sonja Morgan helps LuAnn throw a charity party. Meanwhile, Ramona proposes that she and Mario renew their wedding vows; Alex, Kelly and Ramona walk the runway at Brooklyn Fashion Weekend; and a stunning discovery awaits Bethenny.