Episode 14 of "Nanatsu no Maken ga Shihai Suru (Reign of the Seven Spellblades)" delves deeper into the labyrinth and the battles of the characters both inside and outside the labyrinth. The episode begins with Oliver, Nanao, and Chela, who are still inside the labyrinth. They discuss the effect of Ophelia Salvadori's perfume, which is affecting Oliver. Oliver admits that the perfume bothers him, but he doesn’t want it to disrupt his concentration.

Ms. Miligan teaches the group a new technique called the Lanoff Sea Walk, which allows them to walk on water. Oliver successfully performs the technique, followed by Nanao, who learns it from Oliver. Chela joins them, and they cross the swamp.

Along the way, they encounter Mr. Rivermoore, who is also in the labyrinth for his own reasons. He warns them of the dangers and questions their motives. Then, the group is attacked by a water chimera, which Mr. Rivermoore defeats, allowing them to continue their journey.

The episode also includes flashbacks that provide insight into Ophelia Salvadori’s past. It is revealed that she is a complex character who struggles with her own abilities and how others perceive her. She joins Alvin Godfrey’s Campus Watch, a group dedicated to ensuring safety on the school grounds. However, her presence causes tension among the members, as her perfume affects them. A confrontation with Tim Linton, another member, reveals the depth of her issues.

Back in the present, Pete, who is still trapped in Ophelia’s workshop, uses magical orbs to call for help. The episode ends with his desperate hope that someone will notice his plea.