The episode title is "Dokidoki Dōbutsu Rando" (どきどき動物ランド) with Wikipedia translated as "The Bustling Animal Land". The writer is Junko Komura, he write two episodes for Goseiger and one for Go-onger. His main works were in Gokaiger, which is a good series we all know. With this info, we expected high for the story writing part.
The opening song is simply titles as Doubutsu Sentai Zyuohger by Hideaki Takatori. The music incoporated a lot on "jungle" choruses, added more uniqueness to the show. The style is J-Rock as usual very much Super Sentai feel.
Right after the opening song, we got to introduce with Yamato Kazakiri (風切 大和 ) actor by Masaki Nakao (中尾 暢樹 ). He is our red ranger and profession as Zoologist, also a Zoo tour guide. The main story revolved about his mysterious cube. The back story flash about his encounter with mysterious character who given his this cube, a potential backward story we going to see in Zyuohger.
mysterious cube to open up the mysterious portal link
portal door to...