Hirajima Natsumi, Okada Mei, Hazuki Himari, and Negishi Ai arrive at a luxurious beach house. Soon after arriving, they are informed that they will be competing in a series of challenges, the overall winner of which will be deemed the "center" of Merm4id. These challenges are interspersed with gravure-type segments that feature all four unit members. Challenges include guessing what sports each member played in school, cooking omurice, drawing logos from memory, guessing smoothie flavors, a capture-the-flag game involving inner tubes, and guessing items related to their D4DJ characters through touch.

Evening performance of the concert "Lyrical Lily x Merm4id Godo Live Nyan-Nyan Shake!" held at Zepp Haneda in Tokyo on April 24, 2021.

あの光景を、私たちは忘れない。 「ハッピーアラウンド！」が口癖の愛本りんく。 日本に帰国した彼女は、DJ活動が盛んな陽葉学園に転校する。 そこで目にしたDJライブに感動し、明石真秀・大鳴門むに・渡月 麗を次々と巻き込んで、ついにはDJユニットを結成することに。 Peaky P-keyやPhoton Maidenなど、学内のDJユニットとも交流しながら、りんくたちは大きなステージへと駆け上がっていく……！

念願かなってDJの祭典「D4 FES.」に参加したMerm4id。水島茉莉花、日高さおり、松山ダリアはいつもと違う瀬戸リカを心配する。そんな中、ライブを終えた燐舞曲のもとに、リカがやってくる。

期待、革命、未知、挑戦、覚悟、冒険 それぞれの思いを胸に6つのDJユニットが新たに目指す伝説のフェスとは・・・!?

有一种社会学的观点指：在有限的生存空间内，而人口又不断膨胀，人与人间的物理距离愈见拉近，精神上的相互距离即成反正，所以人与人间充满各种距离，并…

Some serious romance heats up as four couples climax inside. Ivy and Charles decide to start a family while on their honeymoon in a tropical paradise. Ashley seduces her piano teacher, Chad. Lesbian couple Ella and Alexa want to start a family and decide that each should pick a man to seduce.

Man Sik is a single father who raises his 7-years-old daughter Ye Na alone. He has yet to register her birth, because he wants her birth certificate to be the same as the other kids, which is to have a mother and father. In order to do so, he offers a deal to a woman from Vietnam: he will pay her 20 million won to put her name on a marriage certificate as his wife and Ye Na's birth certificate as her mother. She declines the offer and Man Sik becomes devastated. Mi Hee then appears.

A recent law school graduate is offered a dream job at a major firm, but doesn`t take it. Instead he runs away to a southern California beach town where he finds himself unexpectedly forming relationships with the people he meets.