After when Gumball left the house Darwin went to the library to meet up with Anais who had called him to help here make a sentry so it can protect the watterson from the invader. Darwin saw the prototype that is fill with real bullet found from a police guns when they test it on a dummy is fast shooting stun Darwin that he didn't know is already 7:00 Pm but luckily some how Anais build a alarm watch that remind them that they have to go home. So Anais and Darwin went home with there blueprint that show how to make the sentry and the prototype sentry. When they got home they saw dad sleeping on the couch and didn't see Gumball "hey dad where Gumball?" Anais and Darwin said. "I don't know kids he may have grab a steel bat with him when I last saw him" Richard said while sleeping. They decide go to bed because is late and they think Gumball will come back soon. Anais went to bed but Darwin went to the attic with the blue print and the prototype sentry he use some of the old junk to improve it now it have two mini gun and a 4 missle with it and Darwin manage to had build the sentry faster and somehow made a dispenser that heal him and give him metal that help him upgrade his sentry. After the whole night of improve the sentry and train himself to build it much faster he deiced to use these thing it attack an intruder soldier. Darwin went out
of the house saying I'll be back after I defend elmore.