Gargantia on the Verdurous Planet

Legend of the Verdurous Planet (1x13)

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To save Gargantia, the outclassed Ledo and Chamber have to defeat Striker by any means. It seems the only choice is for Ledo to merge with Chamber to boost its power, but the process will kill him in a matter of minutes! Meanwhile, Ridget finally learns the purpose of the key... unlocking the ancient weapon known as Heaven's Ladder!