The phrase "and was plotting to" is correct and usable in written English.
It can be used to describe someone's intention or plan to carry out a specific action, often with a connotation of secrecy or scheming.
Example: "He was acting suspiciously, and was plotting to take control of the organization from within."
Alternatives: "and was scheming to" or "and was planning to".
When she returned home, she soon learned from her sister-in-law that her brother had started hiding a butcher knife under his pillow and was plotting to kill her in the middle of the night.
According to prosecutors, the group, which called itself FEAR (Forever Enduring, Always Ready), had stockpiled $87,000 worth of weapons and explosives, and was plotting to overthrow the government through a campaign of terror and assassinations.If the perpetrator is identified it will have political ramifications.
Individuals including Wang Li were soon connected with the "May Sixteenth Corps", a supposed group that exploited divisions in the Cultural Revolution to cause the anarchy and was plotting to seize power.
They were in possession of two hundred pounds of explosives and were plotting to kill Castro, who had arrived to attend a regional heads-of-state summit.
Gujarat police said they were part of a Pakistan-based militant group and were plotting to kill the chief minister.
Ruhnn, a company that enables influencers to sell through e-commerce and is plotting to change the face of China's fashion industry, has raised $125 million after it listed on the Nasdaq on Wednesday.
Adherents still believe that the Queen controls the international drugs trade and is plotting to start World War Three.
Soon, we discovered her so-called friends got in on it with him and were plotting to completely embarrass her during her first week at the new school.
Soon thereafter, Muhammad became convinced that the Jewish tribe Banu Nadir harbored enmity towards him and were plotting to kill him.
Black rectangles highlight one column of electrodes located underneath the neuron and are plotted to scale (8.2 × 5.8 μm2 per electrode).
And then he said he was plotting to murder his best friend.
