Ep 4. A Taste of Poison

In Power Rangers season 16 episode 4 titled "A Taste of Poison," the Power Rangers are faced with a new villain named Venjix. Venjix's evil plan is to use poison to take over the world. When some of the Power Rangers come into contact with the poison, they begin to feel the effects and it's up to the other Rangers to find a cure.

The episode starts with the Rangers battling Venjix's army of robots. During the battle, one of the robots sprays a toxic gas, which hits Yellow and Blue Rangers. They begin to feel dizzy and weak, and are quickly taken back to base to receive medical attention from Doctor K.

Doctor K identifies the poison and starts to work on a cure. However, she soon discovers that she needs a rare plant, which is only found in the middle of the city. Red and Green Rangers volunteer to go and retrieve the plant.

Meanwhile, the other Rangers have to defend the city from Venjix's robots. Venjix has deployed a new weapon, which is designed to spread the poison gas throughout the city. The Rangers come up with a plan to destroy the weapon, but they have to act fast.

Red and Green Rangers successfully retrieve the rare plant, but they are ambushed by Venjix’s forces. They fight their way out of the situation and make it back to base, where Doctor K uses the plant to create an antidote.

The antidote is successful in curing Yellow and Blue Rangers, but Doctor K realizes that they need more of the rare plant to create enough antidote for the entire city. Red and Green Rangers volunteer to go back into the city to retrieve more of the plant.

Back in the city, Red and Green Rangers battle their way through Venjix's forces to reach the plant. They are successful in retrieving the plant, but they are ambushed once again. This time, however, they are outnumbered and outmatched.

Just when it seems like all hope is lost, the other Rangers arrive to lend a hand. Together, they fight off Venjix’s forces and make it safely back to base. Doctor K is able to create enough antidote to cure the entire city.

In the end, the Rangers successfully thwart Venjix's plan to use poison to take over the world. They continue to defend the city from evil threats and help those in need. The episode ends with the Rangers standing united, ready for whatever challenges may come their way in the future.