Previously on Ember Phantasmagoria, Mathias and Delilah had an petty argument in the cockpit which led to Blaine and Mayra pushing them off the pilot seats and they realized that the ship already passed over the Unfortunate Isles, so they resorted into crashing the ship to the entrance of the Palacio Ardiente and once everybody got off the ship, they got surrounded by his guards who equipped military forks, rapiers, glaives, bullet shooting crossbows and shields to defend themselves.
Not only did Blaine found himself and his allies surrounded by the guards, he saw Mathias running away and the others except for him ran away with him doing the same thing as them. At the other side of the entrance of the Palacio Ardiente, the seven didn't notice a two-handed sword on the pedestal except for Delilah, who wanted to use that sword to attack the guards but it was too heavy for her so Mathias, Ostara, Silvia, Emil and Mayra tried to pull her hands off the sword, and they succeeded in doing so.
Blaine walked over to the pedestal and tries to pull the sword off the pedestal with all of his strength, but he couldn't and decided to activate his RED form by putting a red ring in his ring finger in order to defend Mathias, Delilah, Ostara, Silvia, Emil and Mayra from Ignacio's guards and successfully pulled the sword off the pedestal, transforming into his Inner form before running to some of them and slashing their bodies.
However, it couldn't last long, as Blaine's red ring got removed and he was still in his inner form, he couldn't hold the sword anymore, which led to Ignacio's guards bringing him and his allies to the throne room of the Palacio Ardiente.
Once in the room, Blaine wakes up in his normal form instead of his inner form, only to find himself enchained by a fire chain and he saw Ignacio and his wife and concubine as well as Ostara, Mathias, Delilah and Emil crying behind his guards. On the other hand, Ignacio stripped him, in front of Ostara, Delilah, Solana and Ember who then all fainted.
The scene switches to Blaine breaking his chains and he summons his two-handed sword to fight against Ignacio who then pulled his pistol sword, and they got into an fight, in which Ostara, Mathias, Delilah and Emil got impressed at, until the former saw Yule and Nithya under Phantasm's control holding both Ostara and Mathias with their arms only to get burned by Ignacio's fireball.
Ostara angrily bites Yule's arms and set his hair on fire, while Nithya dropped Mathias in the ground and fell unconscious as Phantasm's remnants left her body and merged with the remnants in Yule's body and he went bald as a result of her setting his long hair on fire. At the same time, he went berserk and set the throne room on fire, causing the children to walk away from the fire in horror.
Meanwhile, in order to end the fight, Blaine, Ostara and Emil teamed up with Ignacio to beat the crap out of Yule, and upon beating the crap out of him, the three thanked the emperor for helping them fight him and purify Nithya from Phantasm's curse, and the latter said to them in Spanish "I'm sorry if I hurt you guys before, but thanks for saving my palace, young heroes. As a result, you three along with Silvia, Mayra, Mathias and Delilah, will all have dinner with me tonight."
Nithya woke up and extinguished the fire with her water powers, then Emil ran and kissed her hands before kissing her, much to the chagrin of Ember. Soon, it escalated into the point Ignacio wanted to dance with his wife Solana and at the same time when Blaine wanted to confess his feelings for Ostara.
Soon, Ignacio hosted a dance party at his Palacio Ardiente, and everybody from Pandemonium who got invited to the party came to dance in the ballroom with (their formal wear of course!) to some authentic medieval music, with Nithya, Yanagi and Emlyn (who just divorced Elsoyrd prior to the events of Ember Phantasmagoria Chapter 3) being alone watching others but Emil, Kage and Blake told them to dance with them and the women agreed to dance with them.
However, the news came in when Blaine finally confessed his feelings for Ostara and fell in love with her at first sight. Everybody (including Ignacio himself) except for them clapped and cheered for them to be a real couple, and once the party was over, Ignacio invited the former two, Silvia, Emil, Mayra, Mathias and Delilah to a private dinner at the dining room with him and his wife Solana.
While at the dining room, Ember prepared the food for herself, her lover and his wife Solana as well as the heroes who fought against his guards. Once the dinner was ready, everybody began to eat the plates she cooked and it tasted delicious that they'll all remember forever.
3 hours after they had dinner, Blaine and Ostara were sitting on the rooftop of the Palacio Ardiente and thought their mission against Phantasm wasn't over until Ember told them "I've heard from my lover Ignacio that Phantasm has the family heirloom and she's planning to make the situation worse for you guys by selling it to Elsoyrd as the accessory for the new sword he's gonna make WITHOUT you guys' permission."
Blaine got shocked and angrily said "WHAT!? Is Phantasma gonna sell my heirloom to that Elsword doppelganger? NO F**KING WAY! I won't allow her to do that!" Ostara angrily replied "I agree! We won't let her sell your heirloom!" Ember said to herself "Can I help Blaine and Ostara in their quest to find the former's family heirloom?" and left the rooftop, leaving the two alone in the rooftop.
Blaine stares at Ostara and said to himself "This is the perfect way to kiss her before we get caught!", before whispering to her and they kissed for almost an hour, only to get caught by Emil and Mayra holding a notebook saying "Are you done kissing yet?" much to their horror and they told them they had done kissing each other, before they left.
In turn, Blaine and Ostara secretly talked about their future careers and marriage plans, before giving up on the latter plan in order to focus on pursuing Phantasm's whereabouts and their quest to find the family heirloom. At the end, they saw an meteorite from the outside world, about to hit on Agmaseom Island within 5 hours and it's up to them to stop it before it happens, but what about their quest for the family heirloom and to find Phantasm?
Well, since at least Ignacio completely changed his mind for the best of us and the heroes, will he and Ember help Blaine, Ostara, Silvia, Emil and Mayra as well as the inhabitants of Agmaseom Island stop the meteorite from crashing into the island, find Phantasm's whereabouts and stop her with brainwashing the others and the theft of Blaine's family heirloom?
Soon, at the end of the chapter, there was an anime-style flashback of Blaine and Ostara meeting each other, them encountering Emil and Mayra, and the four meeting Silvia last year, accompanied by a piano music played by Ember in the empty ballroom.