At Alfea, everyone was preparing for the concert, even Daphne and Thoren who made the concert a chance to have a date. During the concert, the witches suddenly attacked, causing the fairies to panic. The Winx transformed while the Specialists and the Paladins prepared to fight them. Whenever they attack, their spells just passed right through them. Musa began to conduct and the fairies played their instruments. Musa controlled the music and used it to attack the witches and defend Alfea. The sound weakens the witches, causing them to flee. While everyone was coming back, the Winx saw Rumpelstiltskin, so they followed him. Musa and the fairies bowed their heads to thank the audience's applause, but Logan had no time to applause. Musa saw Riven and she pushed him away despite his praise for what she did. He told her that he was not there when she needed him because of he was blinded by his ambition to become the leader of the Specialists. And so, he said that she needed someone better, but she knew that Logan was already the best, and considered to be the leader of the Specialists. (Remember the battle against Lord Beerus in the previous story?)
The Winx were enlightened that Musa was their friend even when she was in her gravest moment. And as their friend, they must help her as well. Bloom gave him the key, and he broke the bottle to free the voice.
In front of the gate of Alfea, Riven continued to tell Musa how awful he was both as a specialist and as her boyfriend. The voice came back, enabling Musa to told Riven that she forgave him, "Riven, we have our ups and downs, it is all clear now that we are not meant to be together. Deep down, I knew that this is the right thing for both of us; let's just be friends, and I am sorry Riven, I already have a boyfriend, and you know who it is. To be honest, I had already predicted this all long, ever since your date with Darcy." He was about to leave when the Winx, the Specialists and the Paladins appear and Logan instant transmitted to them. Bloom asked where he was going and he answered that he had some work to do and that he had to do it alone. Sky wished him good fortune while Riven told that he was always there with them. "I am going with you," said Logan.
"No, Logan. I'm sorry. I'm going to do it alone." Riven said, sternly. He gave a last look at Logan, "Keep her safe," and then he left Alfea.
In Alfea, everyone was surprised when the statues of the Alfea Champions became alive, and they had a hard time fighting the three powerful fairies. Logan was so furious that he turned into Super Saiyan 2, and the Alfea Champions all shifted their targets to Super Saiyan 2 Logan, since they all felt powerful energy emitting from him. Ress of the Flame, one of the Alfea Champions first started her shots at Super Saiyan 2 Logan, and much to her surprise he easily deflected Ress's shot. With a blink of an eye, Super Saiyan 2 Logan instantaneous moved behind Ress and jabbed her, injuring her severely and caused her eyes to widen in amazement. Siobhan attempted to shoot water at Musa, but Logan instantaneous moved in front of her and the shot hit him instead. Super Saiyan 2 Logan was drenched from neck down but unmoved. He instantaneous moved behind Siobhan and kneed her in the stomach, repelling her as far away as he possibly could away from Musa. Farcellia attempted to trap Super Saiyan 2 Logan in her wind, but Super Saiyan 2 Logan was below her. He grabbed her foot and threw Farcellia to the ground, dazing her. When all of the other fairies received their powers back, they turned the Alfea Champions back to dust, and Super Saiyan 2 Logan collapsed in fatigue, returning to his original form. Musa ran towards him, "Logan! Logan! Stay with me. Here, I have your medicine." She fed Logan with senzu bean. "Wow! Thanks Musa! I felt so much better," said Logan, and Musa helped him up. "What is this magic bean called? It just heals you instantly," asked Musa. "It's called Senzu Bean. It heals everyone, not just me, and restores energy. It only can be taken once," explained Logan.
At Cloud Tower, Acheron came out and released the Great Lizard Spirit, a trio of dragonheads that shot lightning bolts from their mouths against the Winx. Bloom realized that Acheron was commanding them to do so. She fought Acheron to stop them but failed. Logan turned into Super Saiyan 2 once again, "Thanks for the healing, Musa, but I need to constantly be in my best form each time. Each villain is stronger than the previous ones." Musa held his hand in her Believix form.
Bloom then told Selina that the only way to defeat him was to give him to Rumpelstiltskin, exchange him for the key and lock the Legendarium.
While Bloom was trapped in Legendarium, at the same time in the real world, Musa wondered, "I wonder how it's like to be stronger in Believix form." Logan thought she was asking for lend of energy, but he found himself surrounded with bright light. "Musa?" Logan called, turning transparent each moment, while Musa was giving a piercing scream, with each longer scream in agony as she pulled Logan into her body, "Ah~! Ahh~! Ahhh~! Ahaha~!"
Flora heard her yell, "Musa! Are you alright? Let me help you!"
"Don't come any closer! I am trying something new! Ah~!" ordered Musa.
"But, Musa ––" Flora began.
"No!" Musa warned, wincing and gritting her teeth. Flora watched in concern, while Logan suddenly found himself in Musa' body. "So this is the body's control! I saw lack of power, and I wonder what happens if I add some power into it," wondered Logan. Musa gave a final scream as she finally absorbed Logan into her body, "Ah –––––––!" Logan put his hand onto the inner body and transferred half of his energy to Musa. Musa, after panting and suffering from pulling Logan into her body, felt even more powerful, "Wow! I feel –– I feel so much more powerful!"
"Hello?" Logan called. "Hey Logan!" Musa's voice called back. "Where are you, Musa? Where is this place?" Logan called again. "Welcome to my body, Logan! You are now communicating through my mind," announced Musa. "Eh? Musa? Let me out. Please?" pleaded Logan. "I will, Logan, don't worry. In fact, I love having you in me. I feel so much more powerful in my Believix form. And also, don't worry, I won't do harm," Musa's voice called back. "Fusing your powers with mine? You're a genius, Musa! Alright, let's do this!" Logan transferred another of half his remaining energy to the control, turning Musa into Super Believix Fairy. "BRIGHT HEART!" Super Believix Musa shot at the Great Lizard Spirit and ended its life. Super Believix Musa released Logan from her body and reverted herself back to normal. "I love it!" exclaimed Musa. Logan pulled her closer, "So do I. Perhaps you should inform me first before doing it."
"Can we do it again next time?" asked Musa.
"We can do it every time, just as long as you inform me first," winked Logan. In order to experience being inside one's body, Musa decided that she would enter Logan's body the next try.