在今年的6月中旬，《天才麻将少女》同时公布了TV动画新企划以及外传漫画连载开始的两项重大消息。然而，已经过去了3个月的时间，一直就没再有TV新企划的相关消息放出。 如今，在新一期《天才麻将少女》的四格漫画上，侧边写着：次号将会有天才麻将少女新TV企划的重大发表哦！制作阵容、声优阵容公布？播出日期公布？详细故事内容公布？还是有什么样的新情报等待着我们呢？让我们一同期待10月7日本作次号的发售吧！
阿逗等人历经磨难，终于消灭了通天帮，但七号厨房却永远地被摧毁了，众人黯然之余，姜无牙却神神秘秘地向众人展示了自己发明设计的移动“厨房”，一架巨型飞艇。厨房众人收拾心情，乘坐飞艇，开始踏上了全新冒险之旅。
300年前，沿海居民不堪忍受外来殖民侵略者的压迫与搜刮，组成海盗与殖民者作战。海盗们将殖民者的财宝抢来埋藏在一片神秘海域，传说堆积如山的财宝光芒闪耀，变成美丽的彩虹，从此海盗和他们的宝藏以彩虹而闻名。自称彩虹海盗后人的海狸波波（谢元真 配音）将传说编成故事说给海底居民们听，结果引来了寻找财宝不成的海马家族以及凶狠神秘的独眼鲨（谭满堂 配音）。危急时刻，波波得到小潜艇阿力（范楚绒 配音）的救助。他们带上小潜艇贝贝（洪海天 配音）以及海马家族，踏上了寻找彩虹宝藏的旅途。 浩瀚无垠的大海尽头，等待这群冒险者的将会是什么？
In this season, the show went back to airing one new episode a week, but stayed in the hour-length format, filling up the second half-hour with episodes from previous seasons and some of the prime-time specials from the 1980s. This entire season, along with the second half of season 6, is available on Garfield and Friends: Volume 5 DVD set. Also worth noting is that here, a new theme song was added that was written by J.R. Johnston and Neil Panton. The theme was sung by J.R. Johnston. This theme song was not shown internationally, and as a result, it does not appear on the DVDs (although Garfield's quotations are kept intact). This new introduction sequence used most clips from Seasons 5-7 and a few from the first two seasons, as well as Garfield in Paradise and Garfield's Feline Fantasies. The episodes stopped using a few seconds of the theme playing in the episode title cards after season seven's fourth episode; music from the episodes were used in the title cards until the show ended, even though season six used music from some of their episodes.
