Invasion Saga

Synopsis of The Invasion Saga.
　Its been over a year since the threat of Zero. Peace reigns and the New Z-fighters continue with their daily lives.
　Nach has now been training Kiki to control her super saiyan powers. Nach had descided that after his abismal performance against Nightmare Zero especially as a super saiyan and having seen Kiki tap into her faux super saiyan state, he knew he needed to get stronger and protect the last of the house of Vegeta as well as help Kiki reach her full potential.
　Boxer was also busy working on something that would allow him to help his friends in combat should another threat arise, it's still in the prototype stage. He has also begun learning how to run capsule corp from Dr Briefs his dad at the behest/threat of his mother Franny.
　B'az still stays with Dende and Mr.Popo on the Lookout as Dende's student and self appointed body guard. In the year of peace Dende has begun preparing B'az as his replacement for the position of guardian as well as training B'az in the Demon style martial arts he learned from his old friend Piccolo centuries ago. B'az is secretly reluctant to accept the title of guardian as he feels he is not worthy because of the evil he commited before coming to earth.
　Myou and Daiku have been living with their father Prof. A.K.Uma who iwas revived with the dragon balls along with everyone killed by Zero. They have been living in East City with Prof. Uma now teaching at East City University. Myou and Daiku ajust to their new lives with their father and from time to time visit Goken to or for some training (mostly Daiku as he wants to become Goken's student) or spend time with him (mostly Myou because of her infatuation withhim since he saved her from a killing blow from Zero). She is discovering more about herself and her powers with the help of her father. Daiku however was told by his father that there is a great and destructive power within him that he hoped would benefit Daiku and the world in general.
　Long-Wei and Goken have graduated high school and are now co-owners of the Kame Dojo as was stated in Goku Jr's will. Long-Wei handles the management of the dojo and recieving new applicants along with being the assistant instructor, occasionally teaching students while Goken the head instructor handles the full training of the students. Long-Wei for the past year has been training him self in the style and techniques of his grandfather Zhang-Wei left by him in the scroll, including a special move, an ultimate technique created by Zhang that could instantly turn the tide of battle in the users favour.
　Then there is Goken, now co owner and head instuctor at Kame Dojo with Long-Wei. While running a dojo is taking up most of his time, finds the chance to test the limits of his power and improve with the help of Daiku, Long and B'az. He has also been enjoying his time with Myou anytime she comes over.
　All seems well, but unbeknownst to our heroes a dark and fearsome force makes it journey towards earth and it will push our heroes to their limits and beyond and even then it might not be enough. And this dark force brings with it a demon from Nach's past.