Guaiwaru reveals his plans and enhances himself using multiple Mega Parts, strengthening himself further and anointing himself king. The Cures attempt to engage Guaiwaru but he overpowers all of them, especially Cure Sparkle who feels guilty for falling into Guaiwaru's ploy and leading everyone else into trouble and de-transforms. Guaiwaru prepares to finish her off only for the Cures to cover their tracks and evade him. Hiding in a quiet location, the girls discuss any means to escape from the Byogen Kingdom. Hinata tearfully expresses her regrets to the others, blaming herself for her current failure and believing she still fails no matter how hard she tries. The others comfort her, stating she does not need to feel responsible for that failure while complementing on her strengths. Rate then senses a hole made by Hinata; taking that lead, everyone realises they can use it to make a portal back to their world. After transforming again, the four Cures execute Final Healin' Good Shower to make their own portal and successfully escape through it despite Daruizen's interference. Arriving back on Earth, they discover that most of Sukoyaka City has been infected by Guaiwaru while they were trapped in the Byogen Kingdom. Her morale renewed, Cure Sparkle resolves to purify the town with everything they have, to which the other Cures agree.

Nodoka is still shaken by her last encounter with Daruizen which leaves her family and friends concerned for her when she starts acting distant. Meanwhile, King Byogen tasks Shindoine to search for Daruizen while Queen Teatine and her servants prepare to head to Earth. Rabirin approaches Nodoka later in the day and the latter confides in the Healing Animal of her guilt of abandoning Daruizen. Nodoka also explains that she does not want to go through her painful experience of falling ill again, even though it shaped her. Rabirin encourages Nodoka to release her true feelings. Following the encouragement, Nodoka decides not to help Daruizen to which Rabirin agrees, stating she was not responsible for Daruizen's need and was already doing her best, even in maintaining her own health. Just then, Rate falls ill due to Daruizen enhancing himself with multiple Mega Parts and attacking the town's lighthouse, forcing Nodoka and Asumi to assemble their friends. The four girls transform to engage an evolved Daruizen, during which, the TerraByogen viciously attacks Cure Grace while 'asking' her to help him again. However, Grace, having her resolve renewed, refuses him, finally standing up for herself. She proceeds to beat down Daruizen before her comrades join her to purify the Byogen general. However, Daruizen is not completely purified and is subsequently absorbed by King Byogen who further evolves himself into Neo King Byogen as a result. Despite the evil king's taunts, a fully motivated Cure Grace resolves to purify the king.