In the year 2199, Earth is a mere shell of its former glory after a vicious bombardment by the Gamilas Empire. The inhabitants have been forced underground to escape the irradiated surface, but the deadly radiation inches closer and closer to the retreating population. With only one year before complete and utter extermination, time is fast running out and hope is in short supply. So far, any attempt to escape or retaliate has been instantly annihilated by the alien empire—until an emergency transmission from the planet Iscandar in a neighboring galaxy offers a glimmer of hope to save the doomed planet. Covertly, Earth's Self Defense Force constructs a faster than light engine for a journey to Iscandar. Armed with new weapons and a determined crew of fearless navy men, the World War II era battleship Yamato is reborn as Space Battleship Yamato. She and her crew set out on a perilous journey across the stars to save their home and the entire human race. [Written by MAL Rewrite]

Kazuki has been awaiting 10 years for the day when her neighbours moved back to their old house. She has a crush on Yuuji, whom she considers as her first love but to whom she never managed to express her feelings for him before they moved out. Yuuji often comes over to play with Kazuki, Kazuki's older sister Hatsune and Yuuji's sister Marie when they were kids. Her ideal depiction of Yuuji was soon shattered when he turned out more than she had expected, him acting all ecchi during their reunion. With their parents off in South America, both families must learn to live with each other and rekindle the childhood feelings they shared together. Things get even more crazy as they attend the same school. (Source: ANN)

The Yamada sisters, Kyou (15) and Asu (9), are students studying in secondary and primary schools respectively. Their mother passed away and their father ran away after incurring gambling debts. Despite the difficult circumstances, both of them decide to overcome the unhappiness and welcome their days with enthusiasm and pride. Fortunately, with the change in the law system several years ago, Kyou is able to study and simultaneously take temporary jobs (such as distributing newspapers and tutoring) to make ends meet. On the other hand, Asu takes charge of household chores, prepares meals, and manages the finances to assist her older sister. Surrounding them are also good and kind neighbors such as the novelist, Saegusa-san, and the aunt at the public bath who watch over them. Although life is difficult and at times painful, the sisters are happy to have each other. (Source: ANN)

Amu meets a super-peppy transfer student at Seiyo Academy Elementary School named Hiiragi Rikka at school one day. Not only can she see Guardian Characters, but it seems she has some other, mysterious powers as well. When she sees the work that Amu and the other Guardians do at school, she's awestruck. Each 24-25 minute episode consists of a series of variety show style shorts (including Shugo Chara! Pucchi Puchi) totaling approx. 9-10 minutes, followed by the main 11-12 minute animation titled Shugo Chara!!! Dokki Doki which is the actual continuation of season 2 and comes with it's own opening animation. The remaining time is occupied by live action padding between each section and capped off with the opening/ending themes at the beginning and end of the episode. (Source: AniDB)