The Marriage of the Bat

Season 3 episode 7 of Nightwing & Batgirl. 
== Plot ==
Batman, Green Arrow, and Wildcat fought the Royal Flush Gang and Terrible Trio in their plan to attack Texas. Wildcat destroyed King and Jack in hand to hand combat. Green Arrow shot down and defeated Ten and Ace using his trick arrows. Now Batman defeated Queen using his Batarangs. Next Wildcat defeated Shark, Batman knocked down Vulture, and Green Arrow defeated Fox. After that they sent them to jail.
The scene moves to a flashback of how Batman and Talia's love started. She was the daughter of the demon, Ra's al Ghul. Together, they led the League of Shadows, an organization which assembled the world's most dangerous assassins. Due to that fact, Talia constantly found herself at odds with the Caped Crusader back then. Due to their constant interactions, she started to catch feelings for Batman. Talia admired his grit, determination, passion, and his incorruptible sense of morality. For those reasons, he fell in love with her. She loved the Batman so much that she wanted to marry him. One day, she had the courage to ask permission from her father to be with Batman. However, her father disliked her decision. He didn't like the idea of giving his daughter's hand to his greatest enemy. Talia was hurt, so she decided to leave home and went to the Batcave. That time she told Batman she loves him, and that she's willing to start a new life and depart from her family's evil ways to be with him. Batman was happy to hear this. However, Talia's action put them at odds against the League of Shadows. They decided to go to the Land of Shadows and battle them to settle the dispute once and for all. So Batman and Talia, along with Robin and Batgirl, battled the League of Shadows and Ra's al Ghul's most skilled assassins. The battle led to an ultimate duel of swordsmanship between Ra's al Ghul and Batman, who issued the challenge. The duel ended with Batman emerging the victor, and by that victory was able to prove her worth of earning Talia al Ghul's heart. Ra's al Ghul, seeing Batman's persistence and love of his daughter, finally gave him the consent to be with his daughter. Talia thanked her father and gave him a warm embrace, as he allowed her to to live and be happy with the man she loves. Ra's al Ghul told her daughter she loves her, but that does not forgive her actions against the League of Assassins. Talia hoped one day her father would be able to forgive her. Ra's told all his assassins to head back to their base. Batman, Talia, Robin, and Batgirl exited the the Land of Shadows. When they got in front of the Batplane, Batman went down on one knee and asked her.
"Talia al Ghul. I never expected you to come into my life yet you did. Since I met you, I admired you. You were a beautiful, intelligent, and independent woman. But you were also one of the fiercest women I met. My heart beats fast whenever I encounter you. I thought I was afraid, turns out I had fallen in love. I never thought I'd be able to influence a woman like you to change for the better, yet here we are. Now, I ask you.", Batman said.
Talia went in tears and said "Just get it straight already!"
"Talia. Will you marry me?", Batman asked, as he showed her an engagement ring and took her hand.
"Yes. Yes I do.", Talia answered. 
Batman wore the ring on her left ring finger. They embraced and shared a kiss. Batman wiped her tears. Robin and Batgirl can't help but be in awe at the sight of Batman's proposal.
The flashback ended.
The next day in the Batcave, Talia and Batman went out of their room. Talia showed Batman the ring that he gave to her 3 years ago. 
"I remembered that moment. In that moment I had butterflies. I never had anyone else in my life who made me feel that way", Batman said.
Talia smiled. "So, when are we gonna get married", Talia asked.
"I'll think about it. Maybe next week", Batman said.
Someone sent a distress signal. It was Huntress and Vixen. They are captured by Steven Mandragora. Now, Batman and Talia sprung into action and went to the Batmobile. Upon reaching Mandragora's hideout, the two infiltrated it. They took down Mandragora's Henchmen and later defeated Steven Mandragora. Now they saved and untied Huntress and Vixen. They sent Mandragora to jail. They found out he is responsible for the recent hijacking incidents in Gotham.
The next day, Talia al Ghul went to the Land of Shadows to ask his father if he can attend her wedding with Batman. 
She asked, "Father, can you go to a special occasion?".
"What occasion", Ra's al Ghul asked.
"My marriage with Batman", Talia said.
"What? Seriously?". Ra's al Ghul was shocked.
"Yes, can you go?", Talia asked again.
"No!! You can't! You deserve someone better", Ra's al Ghul said.
"Really? Then who? Can you just hold your hatred of Batman for just one special day? Please", Talia begged, as tears fell from her eyes.
"Oh, okay! Just one day", Ra's finally consented. Talia hugged her father in joy.
One week later, it was the big day. They now went to Gotham Church along with the Best Man (Nightwing) and Maid of Honor (Batgirl).
Ra's al Ghul and the League of Shadow elite, Lady Shiva, Ubu, Sensei, Arkady Duvall, Vertigo, Bane, and Black Widow attended. The Leaguers Flash, Green Arrow, Wonder Woman, Hawkgirl, Huntress, Black Canary, and few who reside in Gotham such Catwoman, and Harley Quinn were also in attendance. The wedding vows took place, and everyone were happy for Batman and Talia. 
"Talia al Ghul. I had known you for a long time now. And as the years gone by my love for you only grew deeper. From the day we met my heart had been yours. You took away all my doubts and fears. You brought me out of the darkness I once thought I'll be trapped forever. But ever since you came, I started to see the light. You taught me how to love, and ever since I loved you with all my heart.", Batman vowed. 
"Batman. I have loved you from the beginning. I fell in love with the masked vigilante that you are. But when I got to know the man behind the mask, I learned to love him even more. You also showed my the right path to life. And I'll always be grateful for that. Since that day, my heart had been yours, and yours had been mine.", Talia responded.
The Priest asked, "Do you, Batman, accept Talia al Ghul, as your companion in life and death, in sickness and in health, in suffering and in comfort, through thick and thin, for always and forever?"
"Yes, I do.", Batman answered.
Now, the Priest asked Talia, "Do you, Talia al Ghul, accept Batman, as your partner in life until death, in sickness and health, in misery and in joy, through hardships and ease, from this day, now, and forever?"
"Yes, I do.", Talia answered as well.
Then, Batman and Talia finally had their wedding kiss. Everyone applauded and their kiss gave others many thoughts.
"I guess it's really true love that has kept them together. Even evil can't put them asunder", Ra's thought.
Catwoman said, "That moment made me feel bittersweet. I'm happy coz my frenemy's getting married, and bitter because I still have feelings for him. It was hard, but soon I gained the courage to accept that he already loves someone else. And I'm glad to see that he's finally with someone who truly loves her.".
Wonder Woman said," True love is powerful".
Lady Shiva said, "Let us all rejoice for now and set aside our hatred of our sister, for she is now married!".
Everyone applauded.
"Best day of my life.", Talia said.
== Characters ==
=== Justice League: ===
* Batman
* Oliver Queen/Green Arrow
* Ted Grant/Wildcat
* Helena Bertinelli/Huntress
* Dinah Laurel Lance/Black Canary
* Talia al Ghul
* Barbara Gordon/Batgirl
* Dick Grayson/Nightwing
* Barry Allen/Flash
* Diana/Wonder Woman
* Shayera Hol/Hawkgirl
=== League of Shadows: ===
* Lady Shiva
* Ra's al Ghul
* Ubu
* Sensei
* Arkady Duvall 
* Vertigo
* Bane
* Black Widow
==== Others: ====
* Selina Kyle/Catwoman-Gotham's famous cat burglar turned antihero.
* Harleen Quinzel/Harley Quinn-former psychiatrist turned psycho; Joker's girlfriend.
=== Villains: ===
* Royal Flush Gang-a group of poker-themed criminals with card-based weapons and attacks.
* Terrible Trio-a group of animal-themed supervillains interested in stealing ancient totems.
* Steven Mandragora-one of Gotham's gang bosses.