Lupica, another one of the legion of space princesses that all seem to have found out about Earth in some tour book, appears and abducts Ataru! 

But Lupica isn't after Ataru for his great looks or charming personality (because he doesn't have either). Lupica's goal is the greatest love potion in the galaxy, which she intends to use to induce her sweetheart to tie the knot. To get it, she needs the possessor of the greatest lust in the universe...

(Source: AniDB)

Taka (technically Tamahome) and Miaka are now happily married and only six months before their new family would be born, but an obsessed girl named Mayo would do anything to make Taka hers. She enters the world of the Four Gods, determined to win Taka's heart and be the new priestess.

Hikaru Hoshina is an energetic middle school student with a love for space and the occult. As she draws constellations in her notebook, a small and fluffy creature suddenly appears from it! The creature, which she names Fuwa, turns out to be an alien with the ability to create warp holes. When Fuwa's companions, the aliens Lala Hagoromo and Prunce, arrive on Earth, they declare that they are searching for the Precure, legendary warriors who will save the universe. But an organization known as the Notraiders soon follows and attacks, intending to capture Fuwa and its power. Overcome by a desire to protect Fuwa, Hikaru finds herself transforming into "Cure Star," one of the Precure that Lala and the others have been searching for! It is now up to Hikaru and the rest to fend off the Notraiders' onslaught, discover the rest of the Precure, and find the Star Color Pens, artifacts that will awaken the 12 Star Princess who keep the universe in balance. [Written by MAL Rewrite]

Hiroshi was ordered to be the manager of his company's Mexico branch in order to collect the fruit of a new type of cactus that has the sweetest nectar. So, Nohara family packs up and moves to Mexico to live there. They had to bid farewell to their acquaintances and the citizens of Kasukabe with tears. Shinnosuke heard that Mexican young girls are stylish and beautiful and became eager for this journey. On arriving at Mardequellyovaca city in Mexico, a new life full of anxiety, surrounded by unique neighbors awaits them. But Shinnosuke and Nohara family had no idea that flesh-eating killer cactuses are going to attack.

To save the town, the Nohara family and their neighbors work together to fight against "Killer Cactus". 

(Source: Wikipedia)