确如网友所说，plead作”恳求、乞求“解时，为不及物动词，不可后接宾语。通常的用法为plead 单独使用，plead for sth 或 plead with sb to do sth. 在后一种用法中，不定式的逻辑主语是sb ,故为plead后接with复合结构作状语。

虽然词典例句中没有plead 后面直接跟不定式的例句，但语料库却可以找到很多这样的例句。以下为COCA语料库部分例句：

Ramirez pleaded to remain in the game.

No wonder her attorneys tried and begged and pleaded to get off the case.

Sheila Baltazar pleaded to send Patrick back home to the rest of his family in rural Louisiana.

The family pleaded to talk to her, for the sake of her children.

With such conviction she had argued, raised her hands in the air, then clasped her arms around Ramnath's neck and pleaded to keep the subtle ending that made a more powerful artistic statement.

 I would have begged and pleaded to be a part of the movie. 

When his son came home and pleaded to be told that his mother was safe, Heidenberger struggled for a way to say she had died.

以上例句中的不定式并不是plead的宾语，而是目的状语。由于目的状语并不是必具性状语，故词典并没有给出不定式作目的状语的例句。而介词for和with与plead有搭配关系，所以词典会给出这种搭配关系，以指导介词的选用。