A hundred years after catastrophic shifts in tectonic plates caused most of its area to submerge, Japan now thrives as a maritime nation. High functioning cities line the coasts of Japan, and well developed sea routes are defended by specialized naval ships. The marine industry is flourishing, and young girls are eager to join the Blue Mermaids—highly skilled women who devote their lives to protecting the seas. After some time apart, childhood friends Akeno Misaki and Moeka China are reunited at Yokosuka Girls' Marine High School. Here they are joined by others who share their dream of becoming Blue Mermaids. Soon, training exercises commence, with Akeno and Moeka being put in charge of their own ships and crew. Everything is progressing smoothly for Akeno as she settles into her role as captain and builds camaraderie between her fellow crew members aboard the Harekaze, a destroyer ship. However, unexpected engine and navigation failures soon leave their ship stranded and the crew in danger. High School Fleet follows the Harekaze's valiant crew as they navigate treacherous waters and other obstacles on their quest to become fully fledged Blue Mermaids.

Hot on the heels of the third year students' graduation, μ's is invited to New York in hopes of spreading the joy of school idols to other parts of the world. Due to the events of the recent Love Live!, μ's has reached eminent stardom which results in crowds swarming them whenever they appear in public. With the increased attention, however, comes a difficult choice. Having yet to publicly announce the decision they came to regarding their future, the young members of μ's are pushed to continue performing by rival group A-RISE, Otonokizaka High School, and even Love Live! itself. As leader, Honoka Kousaka is left wondering if the path they have chosen is truly for the best, as μ's must re-evaluate their choices and come to a final decision on what they want for the future. Love Live! The School Idol Movie depicts the final chapter in μ's story as the girls explore just what being an idol means to them as well as the bond that connects the nine of them together.

The year is 320. Under the rule of the belligerent King Andragoras III, the Kingdom of Pars is at war with the neighboring empire, Lusitania. Though different from his father in many aspects, Arslan, the young prince, sets out to prove his valor on the battlefield for the very first time. However, when the king is betrayed by one of his most trusted officials, the Parsian army is decimated and the capital city of Ecbatana is sieged. With the army in shambles and the Lusitanians out for his head, Arslan is forced to go on the run. With a respected general by his side, Daryun, Arslan soon sets off on a journey in search of allies that will help him take back his home. However, the enemies that the prince faces are far from limited to just those occupying his kingdom. Armies of other kingdoms stand ready to conquer Ecbatana. Moreover, the mastermind behind Lusitania's victory, an enigmatic man hiding behind a silver mask, poses a dangerous threat to Arslan and his company as he possesses a secret that could jeopardize Arslan's right to succession. With the odds stacked against him, Arslan must find the strength and courage to overcome these obstacles, and allies who will help him fight in the journey that will help prepare him for the day he becomes king.

Continuing on his quest to retake Ecbatana, Prince Arslan and his company march toward the city. But upon receiving news that the neighboring Kingdom of Turan is launching an assault on the Parsian stronghold at Peshawar Citadel, the prince is forced to turn back in order to defend the fortress. Amid holding off the invading forces, the Parsian army is met by an unexpected visitor. As Arslan returns to Peshawar, Prince Hermes takes a slight detour from his clash against his cousin to search for the legendary sword Rukhnabad, which would grant him the right to rule and take back what he believes is rightfully his. However, after unearthing the lost artifact, the blade is stolen by the Temple Knights of Lusitania, prompting the masked warrior to give chase. Meanwhile in Ecbatana, the captive King Andragoras III finds an opportunity to strike and begins to make his move. As the separate sides of the Parsian royal conflict clash, Arslan's right to the throne falls under attack. But no matter the obstacles in their way, the young prince and his loyal band of warriors charge forward to restore Pars to its former glory.