Saving Dave at the beginning, I'm really not Dr. Zombie

{No heroine + No system + Farming + Plot flow + Easy} Tushan accidentally got involved in a time and space turbulence. At the critical moment, Dave transformed Tushan into a zombie. After waking up, Tushan found himself in a world where plants and zombies coexisted. In this world, plants and zombies constantly fought each other. As an ordinary zombie, Tushan embarked on a journey to find Dave. Tushan just wanted the truth. Faders, plant zombies, who is the truth of this world? After witnessing the ugliness of the zombies, Tushan decisively chose to join the Pea Shooter. Tushan: I will lead all the plant units to defeat the zombies...