A deadly biochemical contamination has infected the cat city. Most cat citizens have become zombie cats, and zombie cats invade the city everywhere. In order to defend the cat city, scientists called the cat agent team. Players should play the role of the cat agent team, eliminate the wave after wave of zombie cat monsters, zombies attacked in large numbers. How much can you stick to? Attention should be paid to the timely upgrading of cat heroes and weapons in order to challenge more checkpoints.